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bug#20583: calendar-absolute-from-gregorian
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From: |
Nicholas Strauss |
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Subject: |
bug#20583: calendar-absolute-from-gregorian |
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Date: |
Fri, 22 May 2015 08:36:43 -0700 |
There are other day number systems more common than the emacs
"absolute" day number --
the "astro" or Julian day number and the proleptic Gregorian system
used by sqlite3
e.g. select julianday("-4713-11-24").
cal-julian.el:alendar-astro-to-absolute refers to "astro".
Proleptic Gregorian day 0 = November 24, 4714 BC while "astro" day 0 =
January 1, 4713 BC.
I'm attaching julian.lisp which has calendar-correlate-from-date and
calendar-correlate-from-julianday
may help with days before 1582. These are based on Peter
Duffett-Smiths calculations.
julian.lisp
Description: Binary data