3月
18
土
Shabbat before Rosh Chodesh Nissan
http://hebcal.com/h/shabbat-hachodesh
3月
23
木
Beginning of new Hebrew month of Nisan
http://hebcal.com/h/rosh-chodesh-nisan
4月
8
土
Passover, the Feast of Unleavened Bread
http://hebcal.com/h/pesach
4月
9
日
Passover, the Feast of Unleavened Bread
http://hebcal.com/h/pesach