How is passover calculated

Usually this just means crossing off the decimals to the right of the decimal point as in this example, but if the number is negative , you must be careful. For example, the next smallest integer to Remainder x y means the remainder when you divide x by y. It is never negative, and is defined in terms of the [] operation as follows:.

It is possible in at least one of the formulas below for x to be negative, and in this case you must be careful. Always remember that Remainder x y cannot be less than zero.

If you calculate a negative number for Remainder x y , you'll know you've made a mistake. For example, the following way to calculate Remainder -2,30 is wrong:. This is wrong, because [ So the correct calculation is as follows:. The following rules, due to John Conway, allow you to calculate the date of Easter for any year on the Gregorian or Julian calendar. First, calculate the Golden Number G.

This is fundamental to the calculation of both the date of Easter and the Date of Rosh Hashanah. It is intimately connected with the Metonic Cycle.

For any year Y, the Golden Number is defined as. Next, compute S, where. While you can of course look at an online Hebrew calendar and find out when Passover begins, this paper examines how to calculate just one specific value: the first day of Passover.

And in case you are wondering, since many of us use the Gregorian calendar rather than the Julian calendar, the paper helpfully has code at the end for both cases, adding a correction factor if you want the Gregorian date for the beginning of Passover. To calculate the Julian date for the first day of Passover you simply input the Hebrew year Y and then do some calculations that look like the following:. And this is just the beginning!

It is a rather complex calculation to figure out which day of the calendar the first day of Passover falls on. So the early church saw two options:. Although the issue was hotly debated and variously practiced during the first centuries of the church, the Council of Nicea in A. Since the Second Vatican Council in there has been new discussion about fixing the date of Easter on a set Sunday such as the first or second Sunday in April.

However, no progress has been made thus far towards such a change. As a result, in most years the Orthodox Easter follows the Western Easter by one or more weeks, although in some years the dates coincide. Hello and welcome to RayFowler. If you are new here, be sure to subscribe by email or feed reader so that you don't miss any future posts. You can also check out the Top Posts page to get a feel for the site.

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