1. Nisan.—The Sabbath before Passover is called שבת הגדול “the Great
Sabbath,” on account of the importance of the approaching festival.
14th: ערב פסח “the Eve of Passover.” Fast of the First-born.
15th to 22nd: פסח “Passover.”
16th: “Beginning of counting the Omer,” ספירת העומר
17th to 20th: חול המועד “Half-holydays.”
23rd: אסרו חג “Farewell to the Festival.”