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The prohibitions take effect around late morning on the eve of Passover, or the 14th of the month of Nisan in the Jewish calendar.
In 2011 Humphreys claimed in his book The Mystery of the Last Supper that the Last Supper took place on Wednesday (Holy Wednesday), not as traditionally thought Thursday (Maundy Thursday), and the apparent timing discrepancies (Nisan 15 or 14) between the gospels of Matthew, Mark, and Luke versus John are rooted in the use of different calendars by the writers, the former group using an older Jewish calendar and the latter a lunar calendar.
Thus, the Jewish calendar was derived by combining the 19-year cycle using the Alexandrian year with the seven-day week, and was then slightly modified by the Christians to prevent Easter from ever coinciding with Passover.
He was born in 1873 (5633 in the Jewish calendar) in Lyuban, Minsk Voblast, Belarus (near Slutsk) to Avraham and Chasha Levovitz.