Just after midnight, the start of Dec. 21, 2012, corresponds to "Day
21.25" of 360 Calendar,
which is six hours into the 21st day of the 10th or 11th month, and is also Teveth 8th on the regular Hebrew calendar.
Formilab's Calendar Converter.
For information regarding 360 calendar click on below link.
For all other calendars click above link. New calendars to be added soon by Daniel Roth (Ont.,