The Sabbath begins at 6:21 P.M. on Friday, March 14, and concludes at 7:06 P.M. on Saturday in the Vilnius region. Sabbath candles should be lit at 6:03 P.M. and completed before sunset at 6:21 P.M. Purim starts at sunset on Thursday, March 13. Friday is also the International Day of Mathematics and Monday is St. Patrick’s Day.