Num 9:9-11
9 Then the LORD said to Moses, 10 "Tell the Israelites: `When any of you or your descendants are unclean because of a dead body or are away on a journey, they may still celebrate the LORD's Passover. 11 They are to celebrate it on the fourteenth day of the second month at twilight. They are to eat the lamb, together with unleavened bread and bitter herbs.
NIV

 

Note: the precise date for the 2nd Passover is given in: Numbers 9:11

2 Chron 30:1-3
30:1 Hezekiah sent word to all Israel and Judah and also wrote letters to Ephraim and Manasseh, inviting them to come to the temple of the LORD in Jerusalem and celebrate the Passover to the LORD, the God of Israel. 2 The king and his officials and the whole assembly in Jerusalem decided to celebrate the Passover in the second month. 3 They had not been able to celebrate it at the regular time because not enough priests had consecrated themselves and the people had not assembled in Jerusalem.
NIV

Nisan 1 is the first day of the Jewish religious calendar. Nisan 1 this year was 20 March 2007.

 

The 14th day of the 2nd month (Iyar 14) will be: 2 May 2007.

 

- Bob