* Anniversary in Chinese calendar date
@ 2008-11-17 10:16 Leo
2008-11-17 17:28 ` Leo
0 siblings, 1 reply; 2+ messages in thread
From: Leo @ 2008-11-17 10:16 UTC (permalink / raw)
To: help-gnu-emacs
Hi there,
In the south of China, people are still celebrating their birthdays in
Chinese calendar date. I would like to add all my friends there in this
way so that I can promptly send them my gifts.
Any idea how to do this with Emacs calendar?
Thank you.
--
.: Leo :. [ sdl.web AT gmail.com ] .: [ GPG Key: 9283AA3F ] :.
Use the better alternative -- http://www.openoffice.org/
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Anniversary in Chinese calendar date
2008-11-17 10:16 Anniversary in Chinese calendar date Leo
@ 2008-11-17 17:28 ` Leo
0 siblings, 0 replies; 2+ messages in thread
From: Leo @ 2008-11-17 17:28 UTC (permalink / raw)
To: help-gnu-emacs
On 2008-11-17 10:16 +0000, Leo wrote:
> Hi there,
>
> In the south of China, people are still celebrating their birthdays in
> Chinese calendar date. I would like to add all my friends there in this
> way so that I can promptly send them my gifts.
>
> Any idea how to do this with Emacs calendar?
>
> Thank you.
I have come up with this function to be used in the diary file.
(defun diary-chinese-anniversary (lunar-month lunar-day &optional year mark)
(let* ((ddate (diary-make-date lunar-month lunar-day year))
(dd (calendar-extract-day ddate))
(mm (calendar-extract-month ddate))
(yy (calendar-extract-year ddate))
(a-date (calendar-absolute-from-gregorian date))
(c-date (calendar-chinese-from-absolute a-date))
(mm2 (nth 2 c-date))
(dd2 (nth 3 c-date))
(y (calendar-extract-year date))
(diff (if year (- y year) 100)))
(and (> diff 0) (= mm mm2) (= dd dd2)
(cons mark (format entry diff (diary-ordinal-suffix diff))))))
Now you can use something like:
%%(diary-chinese-anniversary 10 11 1983) Someone's %d%s Birthday
--
.: Leo :. [ sdl.web AT gmail.com ] .: [ GPG Key: 9283AA3F ] :.
Use the better alternative -- http://www.openoffice.org/
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