The year is uncertain. However, here is a statement published in Wikipedia, the online encyclopedia:
Although there is no final consensus regarding the specific year or day, it is generally agreed by biblical scholars that it occurred during the governorship of Pontius Pilate (between A.D. 26 and A.D. 36) on a Friday on or near Passover (Nisan 15). Several analyses based on astronomical data and computer simulations agree on the date Friday April 3, A.D. 33.
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