The Sabbath begins at 3:57 P.M. on Friday, December 26, and concludes at 5:03 P.M. on Saturday in the Vilnius region. Sabbath candles should be lit at 3:39 P.M. and completed before sunset at 3:57 P.M. Saturday. Tuesday, December 30, is Asarah b’Tevet, the fast day is to mourn the siege of Jerusalem by Nebuchadnezzar II of Babylonia. December 28 and 29 are related days of fasting.