Calc now uses the Gregorian calendar for all dates,

and uses January 1, 1 AD as its day number 1.
* doc/misc/calc.texi (Date Forms): Document this.

* lisp/calc/calc-forms.el (math-julian-date-beginning)
(math-julian-date-beginning-int): Implement this.

1 files changed, 6 insertions, 0 deletions

diff --git a/doc/misc/ChangeLog b/doc/misc/ChangeLog
index b31b67b5d84..39931f3a779 100644
--- a/doc/misc/ChangeLog
+++ b/doc/misc/ChangeLog
@@ -1,3 +1,9 @@
+2012-11-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Calc now uses the Gregorian calendar for all dates,
+        and uses January 1, 1 AD as its day number 1.
+        * calc.texi (Date Forms): Document this.
+
 2012-11-16  Glenn Morris  <rgm@gnu.org>
 
         * cl.texi (Function Bindings): Clarify that cl-flet is lexical.