Maundy Thursday normally celebrated in the evening, when Friday begins according to Jewish tradition, as the Last Supper was held on the feast of Passover, according to the three Synoptic Gospels. Use of the names "Maundy Thursday", "Holy Thursday", and others is not evenly distributed. What is the generally accepted name for the day varies according to geographical area and religious affiliation. Thus, although in England "Maundy Thursday" is the normal term, the term is less commonly used in Ireland, Scotland or Canada. People may use one term in a religious context and another in the context of the civil calendar of
Days of week on Hebrew calendar the "four gates". Since three arrangements cannot occur within the fixed calendar, most holidays can each occur on one of four possible days. All the holy days and festivals fall in the months of Nisan through Tishrei, months one to seven. These months always have the same number of days, alternating 30 and 29. The next two months are Cheshvan and Kislev, months eight and nine. Both or either of these months can have either 29 or 30 days, allowing for adjustments to be made and the schedule in the coming year to be manipulated. (On a regular year, Cheshvan