Bug #38695 for DateTime-Calendar-Japanese: Bug: bad conversions in December 1775

I'm using DateTime-Calendar-Japanese-0.06001 with perl v5.10.0 built for i686-linux-ld; uname -a reports "Linux opal 2.6.19.1 #1 Tue Jan 9 20:55:16 EST 2007 i686 unknown". For some dates in December 1775 Gregorian, the DateTime::Calendar::Japanese module produces bizarre results that cannot be correct when converting Gregorian dates to the lunisolar calendar. See the attached code, which produces this output: Asia/Tokyo 1775-12-20: ANNEI 4, month 11, day 28 1775-12-21: ANNEI 4, month 11, day 29 1775-12-22: ANNEI 4, month 11, day 30 1775-12-23: ANNEI 4, month 11, day 1 1775-12-24: ANNEI 4, month 11, day 2 Asia/Shanghai 1775-12-20: ANNEI 4, month 11, day 28 1775-12-21: ANNEI 4, month 11, day 29 1775-12-22: ANNEI 4, month 12, day 1 1775-12-23: ANNEI 4, month 11, day 2 1775-12-24: ANNEI 4, month 11, day 3 The dates after 22 December change depending on the time zone - which might be correct for some cases because of the date following Chinese time, but there shouldn't be a big enough time difference between Tokyo and Shanghai for it to make a difference in this case given that the input dates are all using 12:00 noon. Be that as it may, reverting to month 11 on 23 December seems to be incorrect for both zones. -- Matthew Skala mskala@ansuz.sooke.bc.ca Embrace and defend. http://ansuz.sooke.bc.ca/