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For determination of the day of the week (1 January 2000, Saturday) the day of the month: 1 ~ 31 (1) the month: (6) the year: (0) the century mod 4 for the Gregorian calendar and mod 7 for the Julian calendar (0). adding 1+6+0+0=7. Dividing by 7 leaves a remainder of 0, so the day of the week is Saturday. The formula is w = (d + m + y + c) mod 7.
Since December 12 is a doomsday, December 25, being thirteen days afterwards (two weeks less a day), fell on a Saturday. Christmas Day is always the day of the week before doomsday. In addition, July 4 ( U.S. Independence Day ) is always on the same day of the week as a doomsday, as are Halloween (October 31), Pi Day (March 14), and December 26 ...
Christmas is just one of many holidays and observances happening in December 2023. Did you know about National Cookie Day or No Interruptions Day?! Find out more!
Leap years have two letters, so for January and February calculate the day of the week for January 1 and for March to December calculate the day of the week for October 1. Leap years are all years that divide exactly by four, with the following exceptions: Gregorian calendar – all years divisible by 100, except those that divide exactly by 400.
National Influenza Vaccination Week (December 6-12) ... December 31. Make Up Your Mind Day. National Champagne Day. New Year's Eve. No Interruptions Day.
2. Click Calendar. 3. Click on an event in the Day, Week, or Month view. 4. Click Edit. 5. Click the calendar name | select a calendar to move the event to. 6. Click Save. Note: To move a single event, click This Event Only. To move all future occurrences, click This Event and Future.
Seven (31-day) one-month calendars (or seven each of 28–31 day month lengths, for a total of 28) and one or more tables to show which calendar is used for any given month. Some perpetual calendars' tables slide against each other so that aligning two scales with one another reveals the specific month calendar via a pointer or window mechanism ...
Starting in March, the sequence basically alternates 3, 2, 3, 2, 3, but every five months there are two 31-day months in a row (July–August and December–January). [1] The fraction 13/5 = 2.6 and the floor function have that effect; the denominator of 5 sets a period of 5 months.