[sourcery]

Start of Passover = Sundown Nisan 15, 5767 [Hebrew] = Sundown on Monday, April 2, 2007 [Gregorian]. Passover lasts for either 7 or 8 days, depending on the sect.

Here is the correlation between Gregorian Easter and the first day of Passover, from Gregorian year 2000 through 2009 (ignoring the 1/4 of the Hebrew day that overlaps the previous Gregorian day):

2000:
    Passover: 
        Thu, 5760 Nisan 15 [Hebrew]
        Thu, 2000 April 20
    Easter: April 23, 2000

2001:
    Passover:
	Sun, 5761 Nisan 15 [Hebrew]
	Sun, 2001 April 8
    Easter: April 15, 2001

2002:
    Passover:
	Thu, 5762 Nisan 15 [Hebrew]
	Thu, 2002 March 28
    Easter: March 31, 2002

2003:
    Passover:
	Thu, 5763 Nisan 15 [Hebrew]
	Thu, 2003 April 17
    Easter: April 20, 2003

2004:
    Passover:
	Tue, 5764 Nisan 15 [Hebrew]
	Tue, 2004 April 6
    Easter: April 11, 2004

2005:
    Passover:
	Sun, 5765 Nisan 15 [Hebrew]
	Sun, 2005 April 24
    Easter: March 27, 2005

2006:
    Passover:
	Thu, 5766 Nisan 15 [Hebrew]
	Thu, 2006 April 13
    Easter: April 16, 2006

2007:
    Passover:
	Tue, 5767 Nisan 15 [Hebrew]
	Tue, 2007 April 3
    Easter: April 8, 2007

2008:
    Passover:
	Sun, 5768 Nisan 15 [Hebrew]
	Sun, 2008 April 20
    Easter: March 23, 2008
 
2009:
    Passover:
	Thu, 5769 Nisan 15 [Hebrew]
	Thu, 2009 April 9
    Easter: April 12, 2009

[Uri’el-2012]

Thank you for your research.

Prior to 2000 Easter and Pesach would only coincide 5 or 6 times in 19 years