DST 2007
========
by Thomas Chung <tchung@openwebmail.org>
on 2007-03-11

Starting in 2007, daylight time begins in the United States on the second Sunday in March and ends on the first Sunday in November. 
On the second Sunday in March, clocks are set ahead one hour at 2:00 a.m. local standard time, which becomes 3:00 a.m. local daylight time. 
On the first Sunday in November, clocks are set back one hour at 2:00 a.m. local daylight time, which becomes 1:00 a.m. local standard time. 
In 2007, daylight time begins on March 11 and ends on November 4.

To fix calender (holiday files) updated with DST 2007 for Open Webmail, replace two files - en and en_US - in following location:

/var/www/cgi-bin/openwebmail/etc/holidays


Reference
=========
http://aa.usno.navy.mil/faq/docs/daylight_time.html