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Pesach 2040 / פֶּסַח 5800 begins in the Diaspora at sundown on Wednesday, 28 March 2040 and ends at nightfall on Thursday, 5 April 2040.
Although the dates on the Gregorian calendar can shift, Passover always begins on the 15th day of the month of Nisan in the Jewish calendar. So according to the Hebrew calendar, Passover can never be "early" or "not early".
Encyclopædia Britannica has an excellent introduction to the Jewish calendar.
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