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-rw-r--r--lisp/calendar/cal-hebrew.el1179
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1;;; cal-hebrew.el --- calendar functions for the Islamic calendar.
2
3;; Copyright (C) 1995 Free Software Foundation, Inc.
4
5;; Author: Nachum Dershowi <nachum@cs.uiuc.edu>
6;; Edward M. Reingold <reingold@cs.uiuc.edu>
7;; Keywords: calendar
8;; Human-Keywords: Hebrew calendar, calendar, diary
9
10;; This file is part of GNU Emacs.
11
12;; GNU Emacs is free software; you can redistribute it and/or modify
13;; it under the terms of the GNU General Public License as published by
14;; the Free Software Foundation; either version 2, or (at your option)
15;; any later version.
16
17;; GNU Emacs is distributed in the hope that it will be useful,
18;; but WITHOUT ANY WARRANTY; without even the implied warranty of
19;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20;; GNU General Public License for more details.
21
22;; You should have received a copy of the GNU General Public License
23;; along with GNU Emacs; see the file COPYING. If not, write to
24;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
25
26;;; Commentary:
27
28;; This collection of functions implements the features of calendar.el and
29;; diary.el that deal with the Hebrew calendar.
30
31;; Comments, corrections, and improvements should be sent to
32;; Edward M. Reingold Department of Computer Science
33;; (217) 333-6733 University of Illinois at Urbana-Champaign
34;; reingold@cs.uiuc.edu 1304 West Springfield Avenue
35;; Urbana, Illinois 61801
36
37;;; Code:
38
39(require 'calendar)
40
41(defun calendar-hebrew-from-absolute (date)
42 "Compute the Hebrew date (month day year) corresponding to absolute DATE.
43The absolute date is the number of days elapsed since the (imaginary)
44Gregorian date Sunday, December 31, 1 BC."
45 (let* ((greg-date (calendar-gregorian-from-absolute date))
46 (month (aref [9 10 11 12 1 2 3 4 7 7 7 8]
47 (1- (extract-calendar-month greg-date))))
48 (day)
49 (year (+ 3760 (extract-calendar-year greg-date))))
50 (while (>= date (calendar-absolute-from-hebrew (list 7 1 (1+ year))))
51 (setq year (1+ year)))
52 (let ((length (hebrew-calendar-last-month-of-year year)))
53 (while (> date
54 (calendar-absolute-from-hebrew
55 (list month
56 (hebrew-calendar-last-day-of-month month year)
57 year)))
58 (setq month (1+ (% month length)))))
59 (setq day (1+
60 (- date (calendar-absolute-from-hebrew (list month 1 year)))))
61 (list month day year)))
62
63(defun hebrew-calendar-leap-year-p (year)
64 "t if YEAR is a Hebrew calendar leap year."
65 (< (% (1+ (* 7 year)) 19) 7))
66
67(defun hebrew-calendar-last-month-of-year (year)
68 "The last month of the Hebrew calendar YEAR."
69 (if (hebrew-calendar-leap-year-p year)
70 13
71 12))
72
73(defun hebrew-calendar-last-day-of-month (month year)
74 "The last day of MONTH in YEAR."
75 (if (or (memq month (list 2 4 6 10 13))
76 (and (= month 12) (not (hebrew-calendar-leap-year-p year)))
77 (and (= month 8) (not (hebrew-calendar-long-heshvan-p year)))
78 (and (= month 9) (hebrew-calendar-short-kislev-p year)))
79 29
80 30))
81
82(defun hebrew-calendar-elapsed-days (year)
83 "Days from Sun. prior to start of Hebrew calendar to mean conjunction of Tishri of Hebrew YEAR."
84 (let* ((months-elapsed
85 (+ (* 235 (/ (1- year) 19));; Months in complete cycles so far.
86 (* 12 (% (1- year) 19)) ;; Regular months in this cycle
87 (/ (1+ (* 7 (% (1- year) 19))) 19)));; Leap months this cycle
88 (parts-elapsed (+ 204 (* 793 (% months-elapsed 1080))))
89 (hours-elapsed (+ 5
90 (* 12 months-elapsed)
91 (* 793 (/ months-elapsed 1080))
92 (/ parts-elapsed 1080)))
93 (parts ;; Conjunction parts
94 (+ (* 1080 (% hours-elapsed 24)) (% parts-elapsed 1080)))
95 (day ;; Conjunction day
96 (+ 1 (* 29 months-elapsed) (/ hours-elapsed 24)))
97 (alternative-day
98 (if (or (>= parts 19440) ;; If the new moon is at or after midday,
99 (and (= (% day 7) 2);; ...or is on a Tuesday...
100 (>= parts 9924) ;; at 9 hours, 204 parts or later...
101 (not (hebrew-calendar-leap-year-p year)));; of a
102 ;; common year,
103 (and (= (% day 7) 1);; ...or is on a Monday...
104 (>= parts 16789) ;; at 15 hours, 589 parts or later...
105 (hebrew-calendar-leap-year-p (1- year))));; at the end
106 ;; of a leap year
107 ;; Then postpone Rosh HaShanah one day
108 (1+ day)
109 ;; Else
110 day)))
111 (if ;; If Rosh HaShanah would occur on Sunday, Wednesday, or Friday
112 (memq (% alternative-day 7) (list 0 3 5))
113 ;; Then postpone it one (more) day and return
114 (1+ alternative-day)
115 ;; Else return
116 alternative-day)))
117
118(defun hebrew-calendar-days-in-year (year)
119 "Number of days in Hebrew YEAR."
120 (- (hebrew-calendar-elapsed-days (1+ year))
121 (hebrew-calendar-elapsed-days year)))
122
123(defun hebrew-calendar-long-heshvan-p (year)
124 "t if Heshvan is long in Hebrew YEAR."
125 (= (% (hebrew-calendar-days-in-year year) 10) 5))
126
127(defun hebrew-calendar-short-kislev-p (year)
128 "t if Kislev is short in Hebrew YEAR."
129 (= (% (hebrew-calendar-days-in-year year) 10) 3))
130
131(defun calendar-absolute-from-hebrew (date)
132 "Absolute date of Hebrew DATE.
133The absolute date is the number of days elapsed since the (imaginary)
134Gregorian date Sunday, December 31, 1 BC."
135 (let* ((month (extract-calendar-month date))
136 (day (extract-calendar-day date))
137 (year (extract-calendar-year date)))
138 (+ day ;; Days so far this month.
139 (if (< month 7);; before Tishri
140 ;; Then add days in prior months this year before and after Nisan
141 (+ (calendar-sum
142 m 7 (<= m (hebrew-calendar-last-month-of-year year))
143 (hebrew-calendar-last-day-of-month m year))
144 (calendar-sum
145 m 1 (< m month)
146 (hebrew-calendar-last-day-of-month m year)))
147 ;; Else add days in prior months this year
148 (calendar-sum
149 m 7 (< m month)
150 (hebrew-calendar-last-day-of-month m year)))
151 (hebrew-calendar-elapsed-days year);; Days in prior years.
152 -1373429))) ;; Days elapsed before absolute date 1.
153
154(defvar calendar-hebrew-month-name-array-common-year
155 ["Nisan" "Iyar" "Sivan" "Tammuz" "Av" "Elul" "Tishri"
156 "Heshvan" "Kislev" "Teveth" "Shevat" "Adar"])
157
158(defvar calendar-hebrew-month-name-array-leap-year
159 ["Nisan" "Iyar" "Sivan" "Tammuz" "Av" "Elul" "Tishri"
160 "Heshvan" "Kislev" "Teveth" "Shevat" "Adar I" "Adar II"])
161
162(defun calendar-hebrew-date-string (&optional date)
163 "String of Hebrew date before sunset of Gregorian DATE.
164Defaults to today's date if DATE is not given.
165Driven by the variable `calendar-date-display-form'."
166 (let* ((hebrew-date (calendar-hebrew-from-absolute
167 (calendar-absolute-from-gregorian
168 (or date (calendar-current-date)))))
169 (calendar-month-name-array
170 (if (hebrew-calendar-leap-year-p (extract-calendar-year hebrew-date))
171 calendar-hebrew-month-name-array-leap-year
172 calendar-hebrew-month-name-array-common-year)))
173 (calendar-date-string hebrew-date nil t)))
174
175(defun calendar-print-hebrew-date ()
176 "Show the Hebrew calendar equivalent of the date under the cursor."
177 (interactive)
178 (message "Hebrew date (until sunset): %s"
179 (calendar-hebrew-date-string (calendar-cursor-to-date t))))
180
181(defun hebrew-calendar-yahrzeit (death-date year)
182 "Absolute date of the anniversary of Hebrew DEATH-DATE in Hebrew YEAR."
183 (let* ((death-day (extract-calendar-day death-date))
184 (death-month (extract-calendar-month death-date))
185 (death-year (extract-calendar-year death-date)))
186 (cond
187 ;; If it's Heshvan 30 it depends on the first anniversary; if
188 ;; that was not Heshvan 30, use the day before Kislev 1.
189 ((and (= death-month 8)
190 (= death-day 30)
191 (not (hebrew-calendar-long-heshvan-p (1+ death-year))))
192 (1- (calendar-absolute-from-hebrew (list 9 1 year))))
193 ;; If it's Kislev 30 it depends on the first anniversary; if
194 ;; that was not Kislev 30, use the day before Teveth 1.
195 ((and (= death-month 9)
196 (= death-day 30)
197 (hebrew-calendar-short-kislev-p (1+ death-year)))
198 (1- (calendar-absolute-from-hebrew (list 10 1 year))))
199 ;; If it's Adar II, use the same day in last month of
200 ;; year (Adar or Adar II).
201 ((= death-month 13)
202 (calendar-absolute-from-hebrew
203 (list (hebrew-calendar-last-month-of-year year) death-day year)))
204 ;; If it's the 30th in Adar I and year is not a leap year
205 ;; (so Adar has only 29 days), use the last day in Shevat.
206 ((and (= death-day 30)
207 (= death-month 12)
208 (not (hebrew-calendar-leap-year-p year)))
209 (calendar-absolute-from-hebrew (list 11 30 year)))
210 ;; In all other cases, use the normal anniversary of the date of death.
211 (t (calendar-absolute-from-hebrew
212 (list death-month death-day year))))))
213
214(defun calendar-goto-hebrew-date (date &optional noecho)
215 "Move cursor to Hebrew DATE; echo Hebrew date unless NOECHO is t."
216 (interactive
217 (let* ((today (calendar-current-date))
218 (year (calendar-read
219 "Hebrew calendar year (>3760): "
220 '(lambda (x) (> x 3760))
221 (int-to-string
222 (extract-calendar-year
223 (calendar-hebrew-from-absolute
224 (calendar-absolute-from-gregorian today))))))
225 (month-array (if (hebrew-calendar-leap-year-p year)
226 calendar-hebrew-month-name-array-leap-year
227 calendar-hebrew-month-name-array-common-year))
228 (completion-ignore-case t)
229 (month (cdr (assoc
230 (capitalize
231 (completing-read
232 "Hebrew calendar month name: "
233 (mapcar 'list (append month-array nil))
234 (if (= year 3761)
235 '(lambda (x)
236 (let ((m (cdr
237 (assoc
238 (car x)
239 (calendar-make-alist
240 month-array)))))
241 (< 0
242 (calendar-absolute-from-hebrew
243 (list m
244 (hebrew-calendar-last-day-of-month
245 m year)
246 year))))))
247
248 t))
249 (calendar-make-alist month-array 1 'capitalize))))
250 (last (hebrew-calendar-last-day-of-month month year))
251 (first (if (and (= year 3761) (= month 10))
252 18 1))
253 (day (calendar-read
254 (format "Hebrew calendar day (%d-%d): "
255 first last)
256 '(lambda (x) (and (<= first x) (<= x last))))))
257 (list (list month day year))))
258 (calendar-goto-date (calendar-gregorian-from-absolute
259 (calendar-absolute-from-hebrew date)))
260 (or noecho (calendar-print-hebrew-date)))
261
262(defun holiday-hebrew (month day string)
263 "Holiday on MONTH, DAY (Hebrew) called STRING.
264If MONTH, DAY (Hebrew) is visible, the value returned is corresponding
265Gregorian date in the form of the list (((month day year) STRING)). Returns
266nil if it is not visible in the current calendar window."
267 (if (memq displayed-month;; This test is only to speed things up a bit;
268 (list ;; it works fine without the test too.
269 (if (< 11 month) (- month 11) (+ month 1))
270 (if (< 10 month) (- month 10) (+ month 2))
271 (if (< 9 month) (- month 9) (+ month 3))
272 (if (< 8 month) (- month 8) (+ month 4))
273 (if (< 7 month) (- month 7) (+ month 5))))
274 (let ((m1 displayed-month)
275 (y1 displayed-year)
276 (m2 displayed-month)
277 (y2 displayed-year)
278 (year))
279 (increment-calendar-month m1 y1 -1)
280 (increment-calendar-month m2 y2 1)
281 (let* ((start-date (calendar-absolute-from-gregorian
282 (list m1 1 y1)))
283 (end-date (calendar-absolute-from-gregorian
284 (list m2 (calendar-last-day-of-month m2 y2) y2)))
285 (hebrew-start (calendar-hebrew-from-absolute start-date))
286 (hebrew-end (calendar-hebrew-from-absolute end-date))
287 (hebrew-y1 (extract-calendar-year hebrew-start))
288 (hebrew-y2 (extract-calendar-year hebrew-end)))
289 (setq year (if (< 6 month) hebrew-y2 hebrew-y1))
290 (let ((date (calendar-gregorian-from-absolute
291 (calendar-absolute-from-hebrew
292 (list month day year)))))
293 (if (calendar-date-is-visible-p date)
294 (list (list date string))))))))
295
296(defun holiday-rosh-hashanah-etc ()
297 "List of dates related to Rosh Hashanah, as visible in calendar window."
298 (if (or (< displayed-month 8)
299 (> displayed-month 11))
300 nil;; None of the dates is visible
301 (let* ((abs-r-h (calendar-absolute-from-hebrew
302 (list 7 1 (+ displayed-year 3761))))
303 (mandatory
304 (list
305 (list (calendar-gregorian-from-absolute abs-r-h)
306 (format "Rosh HaShanah %d" (+ 3761 displayed-year)))
307 (list (calendar-gregorian-from-absolute (+ abs-r-h 9))
308 "Yom Kippur")
309 (list (calendar-gregorian-from-absolute (+ abs-r-h 14))
310 "Sukkot")
311 (list (calendar-gregorian-from-absolute (+ abs-r-h 21))
312 "Shemini Atzeret")
313 (list (calendar-gregorian-from-absolute (+ abs-r-h 22))
314 "Simchat Torah")))
315 (optional
316 (list
317 (list (calendar-gregorian-from-absolute
318 (calendar-dayname-on-or-before 6 (- abs-r-h 4)))
319 "Selichot (night)")
320 (list (calendar-gregorian-from-absolute (1- abs-r-h))
321 "Erev Rosh HaShannah")
322 (list (calendar-gregorian-from-absolute (1+ abs-r-h))
323 "Rosh HaShanah (second day)")
324 (list (calendar-gregorian-from-absolute
325 (if (= (% abs-r-h 7) 4) (+ abs-r-h 3) (+ abs-r-h 2)))
326 "Tzom Gedaliah")
327 (list (calendar-gregorian-from-absolute
328 (calendar-dayname-on-or-before 6 (+ 7 abs-r-h)))
329 "Shabbat Shuvah")
330 (list (calendar-gregorian-from-absolute (+ abs-r-h 8))
331 "Erev Yom Kippur")
332 (list (calendar-gregorian-from-absolute (+ abs-r-h 13))
333 "Erev Sukkot")
334 (list (calendar-gregorian-from-absolute (+ abs-r-h 15))
335 "Sukkot (second day)")
336 (list (calendar-gregorian-from-absolute (+ abs-r-h 16))
337 "Hol Hamoed Sukkot (first day)")
338 (list (calendar-gregorian-from-absolute (+ abs-r-h 17))
339 "Hol Hamoed Sukkot (second day)")
340 (list (calendar-gregorian-from-absolute (+ abs-r-h 18))
341 "Hol Hamoed Sukkot (third day)")
342 (list (calendar-gregorian-from-absolute (+ abs-r-h 19))
343 "Hol Hamoed Sukkot (fourth day)")
344 (list (calendar-gregorian-from-absolute (+ abs-r-h 20))
345 "Hoshannah Rabbah")))
346 (output-list
347 (filter-visible-calendar-holidays mandatory)))
348 (if all-hebrew-calendar-holidays
349 (setq output-list
350 (append
351 (filter-visible-calendar-holidays optional)
352 output-list)))
353 output-list)))
354
355(defun holiday-hanukkah ()
356 "List of dates related to Hanukkah, as visible in calendar window."
357 (if (memq displayed-month;; This test is only to speed things up a bit;
358 '(10 11 12 1 2));; it works fine without the test too.
359 (let ((m displayed-month)
360 (y displayed-year))
361 (increment-calendar-month m y 1)
362 (let* ((h-y (extract-calendar-year
363 (calendar-hebrew-from-absolute
364 (calendar-absolute-from-gregorian
365 (list m (calendar-last-day-of-month m y) y)))))
366 (abs-h (calendar-absolute-from-hebrew (list 9 25 h-y))))
367 (filter-visible-calendar-holidays
368 (list
369 (list (calendar-gregorian-from-absolute (1- abs-h))
370 "Erev Hanukkah")
371 (list (calendar-gregorian-from-absolute abs-h)
372 "Hanukkah (first day)")
373 (list (calendar-gregorian-from-absolute (1+ abs-h))
374 "Hanukkah (second day)")
375 (list (calendar-gregorian-from-absolute (+ abs-h 2))
376 "Hanukkah (third day)")
377 (list (calendar-gregorian-from-absolute (+ abs-h 3))
378 "Hanukkah (fourth day)")
379 (list (calendar-gregorian-from-absolute (+ abs-h 4))
380 "Hanukkah (fifth day)")
381 (list (calendar-gregorian-from-absolute (+ abs-h 5))
382 "Hanukkah (sixth day)")
383 (list (calendar-gregorian-from-absolute (+ abs-h 6))
384 "Hanukkah (seventh day)")
385 (list (calendar-gregorian-from-absolute (+ abs-h 7))
386 "Hanukkah (eighth day)")))))))
387
388(defun holiday-passover-etc ()
389 "List of dates related to Passover, as visible in calendar window."
390 (if (< 7 displayed-month)
391 nil;; None of the dates is visible
392 (let* ((abs-p (calendar-absolute-from-hebrew
393 (list 1 15 (+ displayed-year 3760))))
394 (mandatory
395 (list
396 (list (calendar-gregorian-from-absolute abs-p)
397 "Passover")
398 (list (calendar-gregorian-from-absolute (+ abs-p 50))
399 "Shavuot")))
400 (optional
401 (list
402 (list (calendar-gregorian-from-absolute
403 (calendar-dayname-on-or-before 6 (- abs-p 43)))
404 "Shabbat Shekalim")
405 (list (calendar-gregorian-from-absolute
406 (calendar-dayname-on-or-before 6 (- abs-p 30)))
407 "Shabbat Zachor")
408 (list (calendar-gregorian-from-absolute
409 (if (= (% abs-p 7) 2) (- abs-p 33) (- abs-p 31)))
410 "Fast of Esther")
411 (list (calendar-gregorian-from-absolute (- abs-p 31))
412 "Erev Purim")
413 (list (calendar-gregorian-from-absolute (- abs-p 30))
414 "Purim")
415 (list (calendar-gregorian-from-absolute
416 (if (zerop (% abs-p 7)) (- abs-p 28) (- abs-p 29)))
417 "Shushan Purim")
418 (list (calendar-gregorian-from-absolute
419 (- (calendar-dayname-on-or-before 6 (- abs-p 14)) 7))
420 "Shabbat Parah")
421 (list (calendar-gregorian-from-absolute
422 (calendar-dayname-on-or-before 6 (- abs-p 14)))
423 "Shabbat HaHodesh")
424 (list (calendar-gregorian-from-absolute
425 (calendar-dayname-on-or-before 6 (1- abs-p)))
426 "Shabbat HaGadol")
427 (list (calendar-gregorian-from-absolute (1- abs-p))
428 "Erev Passover")
429 (list (calendar-gregorian-from-absolute (1+ abs-p))
430 "Passover (second day)")
431 (list (calendar-gregorian-from-absolute (+ abs-p 2))
432 "Hol Hamoed Passover (first day)")
433 (list (calendar-gregorian-from-absolute (+ abs-p 3))
434 "Hol Hamoed Passover (second day)")
435 (list (calendar-gregorian-from-absolute (+ abs-p 4))
436 "Hol Hamoed Passover (third day)")
437 (list (calendar-gregorian-from-absolute (+ abs-p 5))
438 "Hol Hamoed Passover (fourth day)")
439 (list (calendar-gregorian-from-absolute (+ abs-p 6))
440 "Passover (seventh day)")
441 (list (calendar-gregorian-from-absolute (+ abs-p 7))
442 "Passover (eighth day)")
443 (list (calendar-gregorian-from-absolute (+ abs-p 12))
444 "Yom HaShoah")
445 (list (calendar-gregorian-from-absolute
446 (if (zerop (% abs-p 7))
447 (+ abs-p 18)
448 (if (= (% abs-p 7) 6)
449 (+ abs-p 19)
450 (+ abs-p 20))))
451 "Yom HaAtzma'ut")
452 (list (calendar-gregorian-from-absolute (+ abs-p 33))
453 "Lag BaOmer")
454 (list (calendar-gregorian-from-absolute (+ abs-p 43))
455 "Yom Yerushalim")
456 (list (calendar-gregorian-from-absolute (+ abs-p 49))
457 "Erev Shavuot")
458 (list (calendar-gregorian-from-absolute (+ abs-p 51))
459 "Shavuot (second day)")))
460 (output-list
461 (filter-visible-calendar-holidays mandatory)))
462 (if all-hebrew-calendar-holidays
463 (setq output-list
464 (append
465 (filter-visible-calendar-holidays optional)
466 output-list)))
467 output-list)))
468
469(defun holiday-tisha-b-av-etc ()
470 "List of dates around Tisha B'Av, as visible in calendar window."
471 (if (or (< displayed-month 5)
472 (> displayed-month 9))
473 nil;; None of the dates is visible
474 (let* ((abs-t-a (calendar-absolute-from-hebrew
475 (list 5 9 (+ displayed-year 3760)))))
476
477 (filter-visible-calendar-holidays
478 (list
479 (list (calendar-gregorian-from-absolute
480 (if (= (% abs-t-a 7) 6) (- abs-t-a 20) (- abs-t-a 21)))
481 "Tzom Tammuz")
482 (list (calendar-gregorian-from-absolute
483 (calendar-dayname-on-or-before 6 abs-t-a))
484 "Shabbat Hazon")
485 (list (calendar-gregorian-from-absolute
486 (if (= (% abs-t-a 7) 6) (1+ abs-t-a) abs-t-a))
487 "Tisha B'Av")
488 (list (calendar-gregorian-from-absolute
489 (calendar-dayname-on-or-before 6 (+ abs-t-a 7)))
490 "Shabbat Nahamu"))))))
491
492(defun list-hebrew-diary-entries ()
493 "Add any Hebrew date entries from the diary file to `diary-entries-list'.
494Hebrew date diary entries must be prefaced by `hebrew-diary-entry-symbol'
495\(normally an `H'). The same diary date forms govern the style of the Hebrew
496calendar entries, except that the Hebrew month names must be spelled in full.
497The Hebrew months are numbered from 1 to 13 with Nisan being 1, 12 being
498Adar I and 13 being Adar II; you must use `Adar I' if you want Adar of a
499common Hebrew year. If a Hebrew date diary entry begins with a
500`diary-nonmarking-symbol', the entry will appear in the diary listing, but will
501not be marked in the calendar. This function is provided for use with the
502`nongregorian-diary-listing-hook'."
503 (if (< 0 number)
504 (let ((buffer-read-only nil)
505 (diary-modified (buffer-modified-p))
506 (gdate original-date)
507 (mark (regexp-quote diary-nonmarking-symbol)))
508 (calendar-for-loop i from 1 to number do
509 (let* ((d diary-date-forms)
510 (hdate (calendar-hebrew-from-absolute
511 (calendar-absolute-from-gregorian gdate)))
512 (month (extract-calendar-month hdate))
513 (day (extract-calendar-day hdate))
514 (year (extract-calendar-year hdate)))
515 (while d
516 (let*
517 ((date-form (if (equal (car (car d)) 'backup)
518 (cdr (car d))
519 (car d)))
520 (backup (equal (car (car d)) 'backup))
521 (dayname
522 (concat
523 (calendar-day-name gdate) "\\|"
524 (substring (calendar-day-name gdate) 0 3) ".?"))
525 (calendar-month-name-array
526 calendar-hebrew-month-name-array-leap-year)
527 (monthname
528 (concat
529 "\\*\\|"
530 (calendar-month-name month)))
531 (month (concat "\\*\\|0*" (int-to-string month)))
532 (day (concat "\\*\\|0*" (int-to-string day)))
533 (year
534 (concat
535 "\\*\\|0*" (int-to-string year)
536 (if abbreviated-calendar-year
537 (concat "\\|" (int-to-string (% year 100)))
538 "")))
539 (regexp
540 (concat
541 "\\(\\`\\|\^M\\|\n\\)" mark "?"
542 (regexp-quote hebrew-diary-entry-symbol)
543 "\\("
544 (mapconcat 'eval date-form "\\)\\(")
545 "\\)"))
546 (case-fold-search t))
547 (goto-char (point-min))
548 (while (re-search-forward regexp nil t)
549 (if backup (re-search-backward "\\<" nil t))
550 (if (and (or (char-equal (preceding-char) ?\^M)
551 (char-equal (preceding-char) ?\n))
552 (not (looking-at " \\|\^I")))
553 ;; Diary entry that consists only of date.
554 (backward-char 1)
555 ;; Found a nonempty diary entry--make it visible and
556 ;; add it to the list.
557 (let ((entry-start (point))
558 (date-start))
559 (re-search-backward "\^M\\|\n\\|\\`")
560 (setq date-start (point))
561 (re-search-forward "\^M\\|\n" nil t 2)
562 (while (looking-at " \\|\^I")
563 (re-search-forward "\^M\\|\n" nil t))
564 (backward-char 1)
565 (subst-char-in-region date-start (point) ?\^M ?\n t)
566 (add-to-diary-list
567 gdate (buffer-substring entry-start (point)))))))
568 (setq d (cdr d))))
569 (setq gdate
570 (calendar-gregorian-from-absolute
571 (1+ (calendar-absolute-from-gregorian gdate)))))
572 (set-buffer-modified-p diary-modified))
573 (goto-char (point-min))))
574
575(defun mark-hebrew-diary-entries ()
576 "Mark days in the calendar window that have Hebrew date diary entries.
577Each entry in diary-file (or included files) visible in the calendar window
578is marked. Hebrew date entries are prefaced by a hebrew-diary-entry-symbol
579\(normally an `H'). The same diary-date-forms govern the style of the Hebrew
580calendar entries, except that the Hebrew month names must be spelled in full.
581The Hebrew months are numbered from 1 to 13 with Nisan being 1, 12 being
582Adar I and 13 being Adar II; you must use `Adar I' if you want Adar of a
583common Hebrew year. Hebrew date diary entries that begin with a
584diary-nonmarking symbol will not be marked in the calendar. This function
585is provided for use as part of the nongregorian-diary-marking-hook."
586 (let ((d diary-date-forms))
587 (while d
588 (let*
589 ((date-form (if (equal (car (car d)) 'backup)
590 (cdr (car d))
591 (car d)));; ignore 'backup directive
592 (dayname (diary-name-pattern calendar-day-name-array))
593 (monthname
594 (concat
595 (diary-name-pattern calendar-hebrew-month-name-array-leap-year t)
596 "\\|\\*"))
597 (month "[0-9]+\\|\\*")
598 (day "[0-9]+\\|\\*")
599 (year "[0-9]+\\|\\*")
600 (l (length date-form))
601 (d-name-pos (- l (length (memq 'dayname date-form))))
602 (d-name-pos (if (/= l d-name-pos) (+ 2 d-name-pos)))
603 (m-name-pos (- l (length (memq 'monthname date-form))))
604 (m-name-pos (if (/= l m-name-pos) (+ 2 m-name-pos)))
605 (d-pos (- l (length (memq 'day date-form))))
606 (d-pos (if (/= l d-pos) (+ 2 d-pos)))
607 (m-pos (- l (length (memq 'month date-form))))
608 (m-pos (if (/= l m-pos) (+ 2 m-pos)))
609 (y-pos (- l (length (memq 'year date-form))))
610 (y-pos (if (/= l y-pos) (+ 2 y-pos)))
611 (regexp
612 (concat
613 "\\(\\`\\|\^M\\|\n\\)"
614 (regexp-quote hebrew-diary-entry-symbol)
615 "\\("
616 (mapconcat 'eval date-form "\\)\\(")
617 "\\)"))
618 (case-fold-search t))
619 (goto-char (point-min))
620 (while (re-search-forward regexp nil t)
621 (let* ((dd-name
622 (if d-name-pos
623 (buffer-substring
624 (match-beginning d-name-pos)
625 (match-end d-name-pos))))
626 (mm-name
627 (if m-name-pos
628 (buffer-substring
629 (match-beginning m-name-pos)
630 (match-end m-name-pos))))
631 (mm (string-to-int
632 (if m-pos
633 (buffer-substring
634 (match-beginning m-pos)
635 (match-end m-pos))
636 "")))
637 (dd (string-to-int
638 (if d-pos
639 (buffer-substring
640 (match-beginning d-pos)
641 (match-end d-pos))
642 "")))
643 (y-str (if y-pos
644 (buffer-substring
645 (match-beginning y-pos)
646 (match-end y-pos))))
647 (yy (if (not y-str)
648 0
649 (if (and (= (length y-str) 2)
650 abbreviated-calendar-year)
651 (let* ((current-y
652 (extract-calendar-year
653 (calendar-hebrew-from-absolute
654 (calendar-absolute-from-gregorian
655 (calendar-current-date)))))
656 (y (+ (string-to-int y-str)
657 (* 100 (/ current-y 100)))))
658 (if (> (- y current-y) 50)
659 (- y 100)
660 (if (> (- current-y y) 50)
661 (+ y 100)
662 y)))
663 (string-to-int y-str)))))
664 (if dd-name
665 (mark-calendar-days-named
666 (cdr (assoc (capitalize (substring dd-name 0 3))
667 (calendar-make-alist
668 calendar-day-name-array
669 0
670 '(lambda (x) (substring x 0 3))))))
671 (if mm-name
672 (if (string-equal mm-name "*")
673 (setq mm 0)
674 (setq
675 mm
676 (cdr
677 (assoc
678 (capitalize mm-name)
679 (calendar-make-alist
680 calendar-hebrew-month-name-array-leap-year))))))
681 (mark-hebrew-calendar-date-pattern mm dd yy)))))
682 (setq d (cdr d)))))
683
684(defun mark-hebrew-calendar-date-pattern (month day year)
685 "Mark dates in calendar window that conform to Hebrew date MONTH/DAY/YEAR.
686A value of 0 in any position is a wildcard."
687 (save-excursion
688 (set-buffer calendar-buffer)
689 (if (and (/= 0 month) (/= 0 day))
690 (if (/= 0 year)
691 ;; Fully specified Hebrew date.
692 (let ((date (calendar-gregorian-from-absolute
693 (calendar-absolute-from-hebrew
694 (list month day year)))))
695 (if (calendar-date-is-visible-p date)
696 (mark-visible-calendar-date date)))
697 ;; Month and day in any year--this taken from the holiday stuff.
698 (if (memq displayed-month;; This test is only to speed things up a
699 (list ;; bit; it works fine without the test too.
700 (if (< 11 month) (- month 11) (+ month 1))
701 (if (< 10 month) (- month 10) (+ month 2))
702 (if (< 9 month) (- month 9) (+ month 3))
703 (if (< 8 month) (- month 8) (+ month 4))
704 (if (< 7 month) (- month 7) (+ month 5))))
705 (let ((m1 displayed-month)
706 (y1 displayed-year)
707 (m2 displayed-month)
708 (y2 displayed-year)
709 (year))
710 (increment-calendar-month m1 y1 -1)
711 (increment-calendar-month m2 y2 1)
712 (let* ((start-date (calendar-absolute-from-gregorian
713 (list m1 1 y1)))
714 (end-date (calendar-absolute-from-gregorian
715 (list m2
716 (calendar-last-day-of-month m2 y2)
717 y2)))
718 (hebrew-start
719 (calendar-hebrew-from-absolute start-date))
720 (hebrew-end (calendar-hebrew-from-absolute end-date))
721 (hebrew-y1 (extract-calendar-year hebrew-start))
722 (hebrew-y2 (extract-calendar-year hebrew-end)))
723 (setq year (if (< 6 month) hebrew-y2 hebrew-y1))
724 (let ((date (calendar-gregorian-from-absolute
725 (calendar-absolute-from-hebrew
726 (list month day year)))))
727 (if (calendar-date-is-visible-p date)
728 (mark-visible-calendar-date date)))))))
729 ;; Not one of the simple cases--check all visible dates for match.
730 ;; Actually, the following code takes care of ALL of the cases, but
731 ;; it's much too slow to be used for the simple (common) cases.
732 (let ((m displayed-month)
733 (y displayed-year)
734 (first-date)
735 (last-date))
736 (increment-calendar-month m y -1)
737 (setq first-date
738 (calendar-absolute-from-gregorian
739 (list m 1 y)))
740 (increment-calendar-month m y 2)
741 (setq last-date
742 (calendar-absolute-from-gregorian
743 (list m (calendar-last-day-of-month m y) y)))
744 (calendar-for-loop date from first-date to last-date do
745 (let* ((h-date (calendar-hebrew-from-absolute date))
746 (h-month (extract-calendar-month h-date))
747 (h-day (extract-calendar-day h-date))
748 (h-year (extract-calendar-year h-date)))
749 (and (or (zerop month)
750 (= month h-month))
751 (or (zerop day)
752 (= day h-day))
753 (or (zerop year)
754 (= year h-year))
755 (mark-visible-calendar-date
756 (calendar-gregorian-from-absolute date)))))))))
757
758(defun insert-hebrew-diary-entry (arg)
759 "Insert a diary entry.
760For the Hebrew date corresponding to the date indicated by point.
761Prefix arg will make the entry nonmarking."
762 (interactive "P")
763 (let* ((calendar-month-name-array
764 calendar-hebrew-month-name-array-leap-year))
765 (make-diary-entry
766 (concat
767 hebrew-diary-entry-symbol
768 (calendar-date-string
769 (calendar-hebrew-from-absolute
770 (calendar-absolute-from-gregorian
771 (calendar-cursor-to-date t)))
772 nil t))
773 arg)))
774
775(defun insert-monthly-hebrew-diary-entry (arg)
776 "Insert a monthly diary entry.
777For the day of the Hebrew month corresponding to the date indicated by point.
778Prefix arg will make the entry nonmarking."
779 (interactive "P")
780 (let* ((calendar-date-display-form
781 (if european-calendar-style '(day " * ") '("* " day )))
782 (calendar-month-name-array
783 calendar-hebrew-month-name-array-leap-year))
784 (make-diary-entry
785 (concat
786 hebrew-diary-entry-symbol
787 (calendar-date-string
788 (calendar-hebrew-from-absolute
789 (calendar-absolute-from-gregorian
790 (calendar-cursor-to-date t)))))
791 arg)))
792
793(defun insert-yearly-hebrew-diary-entry (arg)
794 "Insert an annual diary entry.
795For the day of the Hebrew year corresponding to the date indicated by point.
796Prefix arg will make the entry nonmarking."
797 (interactive "P")
798 (let* ((calendar-date-display-form
799 (if european-calendar-style
800 '(day " " monthname)
801 '(monthname " " day)))
802 (calendar-month-name-array
803 calendar-hebrew-month-name-array-leap-year))
804 (make-diary-entry
805 (concat
806 hebrew-diary-entry-symbol
807 (calendar-date-string
808 (calendar-hebrew-from-absolute
809 (calendar-absolute-from-gregorian
810 (calendar-cursor-to-date t)))))
811 arg)))
812
813;;;###autoload
814(defun list-yahrzeit-dates (death-date start-year end-year)
815 "List Yahrzeit dates for *Gregorian* DEATH-DATE from START-YEAR to END-YEAR.
816When called interactively from the calendar window, the date of death is taken
817from the cursor position."
818 (interactive
819 (let* ((death-date
820 (if (equal (current-buffer) (get-buffer calendar-buffer))
821 (calendar-cursor-to-date)
822 (let* ((today (calendar-current-date))
823 (year (calendar-read
824 "Year of death (>0): "
825 '(lambda (x) (> x 0))
826 (int-to-string (extract-calendar-year today))))
827 (month-array calendar-month-name-array)
828 (completion-ignore-case t)
829 (month (cdr (assoc
830 (capitalize
831 (completing-read
832 "Month of death (name): "
833 (mapcar 'list (append month-array nil))
834 nil t))
835 (calendar-make-alist
836 month-array 1 'capitalize))))
837 (last (calendar-last-day-of-month month year))
838 (day (calendar-read
839 (format "Day of death (1-%d): " last)
840 '(lambda (x) (and (< 0 x) (<= x last))))))
841 (list month day year))))
842 (death-year (extract-calendar-year death-date))
843 (start-year (calendar-read
844 (format "Starting year of Yahrzeit table (>%d): "
845 death-year)
846 '(lambda (x) (> x death-year))
847 (int-to-string (1+ death-year))))
848 (end-year (calendar-read
849 (format "Ending year of Yahrzeit table (>=%d): "
850 start-year)
851 '(lambda (x) (>= x start-year)))))
852 (list death-date start-year end-year)))
853 (message "Computing yahrzeits...")
854 (let* ((yahrzeit-buffer "*Yahrzeits*")
855 (h-date (calendar-hebrew-from-absolute
856 (calendar-absolute-from-gregorian death-date)))
857 (h-month (extract-calendar-month h-date))
858 (h-day (extract-calendar-day h-date))
859 (h-year (extract-calendar-year h-date)))
860 (set-buffer (get-buffer-create yahrzeit-buffer))
861 (setq buffer-read-only nil)
862 (calendar-set-mode-line
863 (format "Yahrzeit dates for %s = %s"
864 (calendar-date-string death-date)
865 (let ((calendar-month-name-array
866 (if (hebrew-calendar-leap-year-p h-year)
867 calendar-hebrew-month-name-array-leap-year
868 calendar-hebrew-month-name-array-common-year)))
869 (calendar-date-string h-date nil t))))
870 (erase-buffer)
871 (goto-char (point-min))
872 (calendar-for-loop i from start-year to end-year do
873 (insert
874 (calendar-date-string
875 (calendar-gregorian-from-absolute
876 (hebrew-calendar-yahrzeit
877 h-date
878 (extract-calendar-year
879 (calendar-hebrew-from-absolute
880 (calendar-absolute-from-gregorian (list 1 1 i))))))) "\n"))
881 (goto-char (point-min))
882 (set-buffer-modified-p nil)
883 (setq buffer-read-only t)
884 (display-buffer yahrzeit-buffer)
885 (message "Computing yahrzeits...done")))
886
887(defun diary-hebrew-date ()
888 "Hebrew calendar equivalent of date diary entry."
889 (format "Hebrew date (until sunset): %s" (calendar-hebrew-date-string date)))
890
891(defun diary-omer ()
892 "Omer count diary entry.
893Entry applies if date is within 50 days after Passover."
894 (let* ((passover
895 (calendar-absolute-from-hebrew
896 (list 1 15 (+ (extract-calendar-year date) 3760))))
897 (omer (- (calendar-absolute-from-gregorian date) passover))
898 (week (/ omer 7))
899 (day (% omer 7)))
900 (if (and (> omer 0) (< omer 50))
901 (format "Day %d%s of the omer (until sunset)"
902 omer
903 (if (zerop week)
904 ""
905 (format ", that is, %d week%s%s"
906 week
907 (if (= week 1) "" "s")
908 (if (zerop day)
909 ""
910 (format " and %d day%s"
911 day (if (= day 1) "" "s")))))))))
912
913(defun diary-yahrzeit (death-month death-day death-year)
914 "Yahrzeit diary entry--entry applies if date is yahrzeit or the day before.
915Parameters are DEATH-MONTH, DEATH-DAY, DEATH-YEAR; the diary entry is assumed
916to be the name of the person. Date of death is on the *civil* calendar;
917although the date of death is specified by the civil calendar, the proper
918Hebrew calendar yahrzeit is determined. If `european-calendar-style' is t, the
919order of the parameters is changed to DEATH-DAY, DEATH-MONTH, DEATH-YEAR."
920 (let* ((h-date (calendar-hebrew-from-absolute
921 (calendar-absolute-from-gregorian
922 (if european-calendar-style
923 (list death-day death-month death-year)
924 (list death-month death-day death-year)))))
925 (h-month (extract-calendar-month h-date))
926 (h-day (extract-calendar-day h-date))
927 (h-year (extract-calendar-year h-date))
928 (d (calendar-absolute-from-gregorian date))
929 (yr (extract-calendar-year (calendar-hebrew-from-absolute d)))
930 (diff (- yr h-year))
931 (y (hebrew-calendar-yahrzeit h-date yr)))
932 (if (and (> diff 0) (or (= y d) (= y (1+ d))))
933 (format "Yahrzeit of %s%s: %d%s anniversary"
934 entry
935 (if (= y d) "" " (evening)")
936 diff
937 (cond ((= (% diff 10) 1) "st")
938 ((= (% diff 10) 2) "nd")
939 ((= (% diff 10) 3) "rd")
940 (t "th"))))))
941
942(defun diary-rosh-hodesh ()
943 "Rosh Hodesh diary entry.
944Entry applies if date is Rosh Hodesh, the day before, or the Saturday before."
945 (let* ((d (calendar-absolute-from-gregorian date))
946 (h-date (calendar-hebrew-from-absolute d))
947 (h-month (extract-calendar-month h-date))
948 (h-day (extract-calendar-day h-date))
949 (h-year (extract-calendar-year h-date))
950 (leap-year (hebrew-calendar-leap-year-p h-year))
951 (last-day (hebrew-calendar-last-day-of-month h-month h-year))
952 (h-month-names
953 (if leap-year
954 calendar-hebrew-month-name-array-leap-year
955 calendar-hebrew-month-name-array-common-year))
956 (this-month (aref h-month-names (1- h-month)))
957 (h-yesterday (extract-calendar-day
958 (calendar-hebrew-from-absolute (1- d)))))
959 (if (or (= h-day 30) (and (= h-day 1) (/= h-month 7)))
960 (format
961 "Rosh Hodesh %s"
962 (if (= h-day 30)
963 (format
964 "%s (first day)"
965 ;; next month must be in the same year since this
966 ;; month can't be the last month of the year since
967 ;; it has 30 days
968 (aref h-month-names h-month))
969 (if (= h-yesterday 30)
970 (format "%s (second day)" this-month)
971 this-month)))
972 (if (= (% d 7) 6);; Saturday--check for Shabbat Mevarhim
973 (cond ((and (> h-day 22) (/= h-month 6) (= 29 last-day))
974 (format "Mevarhim Rosh Hodesh %s (%s)"
975 (aref h-month-names
976 (if (= h-month
977 (hebrew-calendar-last-month-of-year
978 h-year))
979 0 h-month))
980 (aref calendar-day-name-array (- 29 h-day))))
981 ((and (< h-day 30) (> h-day 22) (= 30 last-day))
982 (format "Mevarhim Rosh Hodesh %s (%s-%s)"
983 (aref h-month-names h-month)
984 (if (= h-day 29)
985 "tomorrow"
986 (aref calendar-day-name-array (- 29 h-day)))
987 (aref calendar-day-name-array
988 (% (- 30 h-day) 7)))))
989 (if (and (= h-day 29) (/= h-month 6))
990 (format "Erev Rosh Hodesh %s"
991 (aref h-month-names
992 (if (= h-month
993 (hebrew-calendar-last-month-of-year
994 h-year))
995 0 h-month))))))))
996
997(defun diary-parasha ()
998 "Parasha diary entry--entry applies if date is a Saturday."
999 (let ((d (calendar-absolute-from-gregorian date)))
1000 (if (= (% d 7) 6);; Saturday
1001 (let*
1002 ((h-year (extract-calendar-year
1003 (calendar-hebrew-from-absolute d)))
1004 (rosh-hashannah
1005 (calendar-absolute-from-hebrew (list 7 1 h-year)))
1006 (passover
1007 (calendar-absolute-from-hebrew (list 1 15 h-year)))
1008 (rosh-hashannah-day
1009 (aref calendar-day-name-array (% rosh-hashannah 7)))
1010 (passover-day
1011 (aref calendar-day-name-array (% passover 7)))
1012 (long-h (hebrew-calendar-long-heshvan-p h-year))
1013 (short-k (hebrew-calendar-short-kislev-p h-year))
1014 (type (cond ((and long-h (not short-k)) "complete")
1015 ((and (not long-h) short-k) "incomplete")
1016 (t "regular")))
1017 (year-format
1018 (symbol-value
1019 (intern (format "hebrew-calendar-year-%s-%s-%s";; keviah
1020 rosh-hashannah-day type passover-day))))
1021 (first-saturday;; of Hebrew year
1022 (calendar-dayname-on-or-before 6 (+ 6 rosh-hashannah)))
1023 (saturday;; which Saturday of the Hebrew year
1024 (/ (- d first-saturday) 7))
1025 (parasha (aref year-format saturday)))
1026 (if parasha
1027 (format
1028 "Parashat %s"
1029 (if (listp parasha);; Israel differs from diaspora
1030 (if (car parasha)
1031 (format "%s (diaspora), %s (Israel)"
1032 (hebrew-calendar-parasha-name (car parasha))
1033 (hebrew-calendar-parasha-name (cdr parasha)))
1034 (format "%s (Israel)"
1035 (hebrew-calendar-parasha-name (cdr parasha))))
1036 (hebrew-calendar-parasha-name parasha))))))))
1037
1038(defvar hebrew-calendar-parashiot-names
1039["Bereshith" "Noah" "Lech L'cha" "Vayera" "Hayei Sarah" "Toledoth"
1040 "Vayetze" "Vayishlah" "Vayeshev" "Mikketz" "Vayiggash" "Vayhi"
1041 "Shemoth" "Vaera" "Bo" "Beshallah" "Yithro" "Mishpatim"
1042 "Terumah" "Tetzavveh" "Ki Tissa" "Vayakhel" "Pekudei" "Vayikra"
1043 "Tzav" "Shemini" "Tazria" "Metzora" "Aharei Moth" "Kedoshim"
1044 "Emor" "Behar" "Behukkotai" "Bemidbar" "Naso" "Behaalot'cha"
1045 "Shelah L'cha" "Korah" "Hukkath" "Balak" "Pinhas" "Mattoth"
1046 "Masei" "Devarim" "Vaethanan" "Ekev" "Reeh" "Shofetim"
1047 "Ki Tetze" "Ki Tavo" "Nitzavim" "Vayelech" "Haazinu"]
1048 "The names of the parashiot in the Torah.")
1049
1050;; The seven ordinary year types (keviot)
1051
1052(defconst hebrew-calendar-year-Saturday-incomplete-Sunday
1053 [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22]
1054 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42]
1055 43 44 45 46 47 48 49 50]
1056 "The structure of the parashiot.
1057Hebrew year starts on Saturday, is `incomplete' (Heshvan and Kislev each have
105829 days), and has Passover start on Sunday.")
1059
1060(defconst hebrew-calendar-year-Saturday-complete-Tuesday
1061 [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22]
1062 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42]
1063 43 44 45 46 47 48 49 [50 51]]
1064 "The structure of the parashiot.
1065Hebrew year that starts on Saturday, is `complete' (Heshvan and Kislev each
1066have 30 days), and has Passover start on Tuesday.")
1067
1068(defconst hebrew-calendar-year-Monday-incomplete-Tuesday
1069 [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22]
1070 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42]
1071 43 44 45 46 47 48 49 [50 51]]
1072 "The structure of the parashiot.
1073Hebrew year that starts on Monday, is `incomplete' (Heshvan and Kislev each
1074have 29 days), and has Passover start on Tuesday.")
1075
1076(defconst hebrew-calendar-year-Monday-complete-Thursday
1077 [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22]
1078 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 (nil . 34) (34 . 35) (35 . 36)
1079 (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]]
1080 "The structure of the parashiot.
1081Hebrew year that starts on Monday, is `complete' (Heshvan and Kislev each have
108230 days), and has Passover start on Thursday.")
1083
1084(defconst hebrew-calendar-year-Tuesday-regular-Thursday
1085 [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22]
1086 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 (nil . 34) (34 . 35) (35 . 36)
1087 (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]]
1088 "The structure of the parashiot.
1089Hebrew year that starts on Tuesday, is `regular' (Heshvan has 29 days and
1090Kislev has 30 days), and has Passover start on Thursday.")
1091
1092(defconst hebrew-calendar-year-Thursday-regular-Saturday
1093 [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 [21 22] 23
1094 24 nil (nil . 25) (25 . [26 27]) ([26 27] . [28 29]) ([28 29] . 30)
1095 (30 . 31) ([31 32] . 32) 33 34 35 36 37 38 39 40 [41 42] 43 44 45 46 47 48
1096 49 50]
1097 "The structure of the parashiot.
1098Hebrew year that starts on Thursday, is `regular' (Heshvan has 29 days and
1099Kislev has 30 days), and has Passover start on Saturday.")
1100
1101(defconst hebrew-calendar-year-Thursday-complete-Sunday
1102 [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1103 23 24 nil 25 [26 27] [28 29] 30 [31 32] 33 34 35 36 37 38 39 40 [41 42]
1104 43 44 45 46 47 48 49 50]
1105 "The structure of the parashiot.
1106Hebrew year that starts on Thursday, is `complete' (Heshvan and Kislev each
1107have 30 days), and has Passover start on Sunday.")
1108
1109;; The seven leap year types (keviot)
1110
1111(defconst hebrew-calendar-year-Saturday-incomplete-Tuesday
1112 [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1113 23 24 25 26 27 nil 28 29 30 31 32 33 34 35 36 37 38 39 40 [41 42]
1114 43 44 45 46 47 48 49 [50 51]]
1115 "The structure of the parashiot.
1116Hebrew year that starts on Saturday, is `incomplete' (Heshvan and Kislev each
1117have 29 days), and has Passover start on Tuesday.")
1118
1119(defconst hebrew-calendar-year-Saturday-complete-Thursday
1120 [nil 52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1121 23 24 25 26 27 nil 28 29 30 31 32 33 (nil . 34) (34 . 35) (35 . 36)
1122 (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]]
1123 "The structure of the parashiot.
1124Hebrew year that starts on Saturday, is `complete' (Heshvan and Kislev each
1125have 30 days), and has Passover start on Thursday.")
1126
1127(defconst hebrew-calendar-year-Monday-incomplete-Thursday
1128 [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1129 23 24 25 26 27 nil 28 29 30 31 32 33 (nil . 34) (34 . 35) (35 . 36)
1130 (36 . 37) (37 . 38) ([38 39] . 39) 40 [41 42] 43 44 45 46 47 48 49 [50 51]]
1131 "The structure of the parashiot.
1132Hebrew year that starts on Monday, is `incomplete' (Heshvan and Kislev each
1133have 29 days), and has Passover start on Thursday.")
1134
1135(defconst hebrew-calendar-year-Monday-complete-Saturday
1136 [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1137 23 24 25 26 27 nil (nil . 28) (28 . 29) (29 . 30) (30 . 31) (31 . 32)
1138 (32 . 33) (33 . 34) (34 . 35) (35 . 36) (36 . 37) (37 . 38) (38 . 39)
1139 (39 . 40) (40 . 41) ([41 42] . 42) 43 44 45 46 47 48 49 50]
1140 "The structure of the parashiot.
1141Hebrew year that starts on Monday, is `complete' (Heshvan and Kislev each have
114230 days), and has Passover start on Saturday.")
1143
1144(defconst hebrew-calendar-year-Tuesday-regular-Saturday
1145 [51 52 nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1146 23 24 25 26 27 nil (nil . 28) (28 . 29) (29 . 30) (30 . 31) (31 . 32)
1147 (32 . 33) (33 . 34) (34 . 35) (35 . 36) (36 . 37) (37 . 38) (38 . 39)
1148 (39 . 40) (40 . 41) ([41 42] . 42) 43 44 45 46 47 48 49 50]
1149 "The structure of the parashiot.
1150Hebrew year that starts on Tuesday, is `regular' (Heshvan has 29 days and
1151Kislev has 30 days), and has Passover start on Saturday.")
1152
1153(defconst hebrew-calendar-year-Thursday-incomplete-Sunday
1154 [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1155 23 24 25 26 27 28 nil 29 30 31 32 33 34 35 36 37 38 39 40 41 42
1156 43 44 45 46 47 48 49 50]
1157 "The structure of the parashiot.
1158Hebrew year that starts on Thursday, is `incomplete' (Heshvan and Kislev both
1159have 29 days), and has Passover start on Sunday.")
1160
1161(defconst hebrew-calendar-year-Thursday-complete-Tuesday
1162 [52 nil nil 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
1163 23 24 25 26 27 28 nil 29 30 31 32 33 34 35 36 37 38 39 40 41 42
1164 43 44 45 46 47 48 49 [50 51]]
1165 "The structure of the parashiot.
1166Hebrew year that starts on Thursday, is `complete' (Heshvan and Kislev both
1167have 30 days), and has Passover start on Tuesday.")
1168
1169(defun hebrew-calendar-parasha-name (p)
1170 "Name(s) corresponding to parasha P."
1171 (if (arrayp p);; combined parasha
1172 (format "%s/%s"
1173 (aref hebrew-calendar-parashiot-names (aref p 0))
1174 (aref hebrew-calendar-parashiot-names (aref p 1)))
1175 (aref hebrew-calendar-parashiot-names p)))
1176
1177(provide 'cal-hebrew)
1178
1179;;; cal-hebrew.el ends here
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