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Date: Tue, 03 Jan 2006 10:22:17 +0800
From: David Xu <davidxu@freebsd.org>
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To: Rich Wales <richw@richw.org>
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Cc: current@freebsd.org
Subject: Re: FreeBSD handles leapsecond correctly
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Rich Wales wrote:
> 
> Peter Jeremy wrote:
> 
>> Islam has its own calendar (with a particularly painful Leap Year
>> calculation that gives very marginally more accuracy than the
>> Gregorian).
> 
> 
> Are you perhaps thinking about the Iranian (Persian) calendar here?
> 
> The Islamic calendar, AFAIK, is a 12-month lunar calendar which makes
> =no= attempt whatsoever to stay in sync with the seasons.
> 
>> I'm not sure how the Chinese, Hindu, Japanese and Jewish calendars
>> handle leap years.
> 
Here is some descriptions of the traditional Chinese calendar (the lunar
calendar)

http://webexhibits.org/calendars/calendar-chinese.html

Note that Chinese farming is based on the lunar calender.

> 
> The Jewish calendar uses a 13th lunar month in seven out of every
> 19 years.  Additionally, some months can have either 29 or 30 days,
> depending on complex calculations.
> 
> Rich Wales
> Palo Alto, CA, USA
> richw@richw.org
> http://www.richw.org

Regards,
David Xu