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The number of days between two dates, which is simply the difference in their Julian day numbers. The dates of moveable holidays, like Christian Easter (the calculation is known as Computus) followed up by Ascension Thursday and Pentecost or Advent Sundays, or the Jewish Passover, for a given year. Converting a date between different calendars.
This template returns the number of full years between two specified dates. If the second set of parameters is not included, it will return the number of full years between a specified date and today's date. Template parameters [Edit template data] Parameter Description Type Status Year ("from" date) 1 The year of the "from" date Number required Month ("from" date) 2 The month of the "from ...
For reasons of retrospective compatibility, the default when inputting dates as year, month and day is |format=raw; however when inputting dates in full it is |format=commas. Note ^ Negative days will occur if the first date is after the second.
The basic approach of nearly all of the methods to calculate the day of the week begins by starting from an "anchor date": a known pair (such as 1 January 1800 as a Wednesday), determining the number of days between the known day and the day that you are trying to determine, and using arithmetic modulo 7 to find a new numerical day of the week.
The doomsday's anchor day calculation is effectively calculating the number of days between any given date in the base year and the same date in the current year, then taking the remainder modulo 7. When both dates come after the leap day (if any), the difference is just 365y + y / 4 (rounded down). But 365 equals 52 × 7 + 1, so after ...
The Gregorian calendar is assumed, with no special support provided for dual dating or the difference between Old Style and New Style dates. If a reference dated July 4, 2022, mentions that someone is 50 years old, that person's current age can be rendered using:
Dates are given using the system of the Roman calendar, as well as the day of the lunar month. As a moveable feast, [1] [2] the date of Easter is determined in each year through a calculation known as computus paschalis (Latin for 'computation') – often simply Computus – or as paschalion particularly in the Orthodox church. [3]
The conventions of this class calculate the number of days between two dates (e.g., between Date1 and Date2) as the Julian day difference. This is the function Days(StartDate, EndDate). The conventions are distinguished primarily by the amount of the CouponRate they assign to each day of the accrual period.