This year (2013), Passover starts on the evening of Monday, March 25th and ends on the evening of Tuesday, April 2nd.
These dates are determined by the Hebrew calendar and mandated by the Torah to occur in spring and on the 15th day of Nissan (the Gregorian equivalent of March or April) and ends on the 22nd day.
Here are the dates Passover will occur in the next 4 years:
- 2014: April 14-22
- 2015: April 3-11
- 2016: April 22-30
- 2017: April 10-18