Most of us have learned that a year has 52 weeks. So why do some calendars have a week numbered 53?
Weeks numbering varies in different countries.
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52 Weeks Plus 1 Day
The reason is that a common year in our Gregorian calendar consists of 52 weeks plus 1 day, while a leap year has 52 weeks plus 2 days.
How Long Is a Tropical Year?
However, countries vary on exactly how they present and number the weeks in their calendars.
Week Number Calculator
Monday or Sunday First?
There are at least six different week numbering systems currently in use around the world.
The most common is the International Standard ISO 8601, where Monday is the first day of the week followed by Tuesday, Wednesday, Thursday, Friday, Saturday, and with Sunday as the seventh and final day. Using ISO 8601 can help diminish uncertainty and confusion when communicating internationally.
Not ISO 8601 in US & Canada
About half the world's population do not follow the ISO standard. Countries like the United States, Canada, Australia, and New Zealand, put Sunday at the start of the week on their calendars.
What is the first day of the week?
Which Years Have 53 Weeks?
The weeks of the year in a Gregorian calendar are numbered from week 1 to week 52 or 53, depending on several varying factors. Most years have 52 weeks, but if the year starts on a Thursday or is a leap year that starts on a Wednesday, that particular year will have 53 numbered weeks. These week numbers are commonly used in some European and Asian countries; but not so much in the United States.
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When Is the Weekend?
As the first day of the week varies in different cultures, so does the weekend. The Christian part of the world marks Sunday as their day of rest and worship, while Muslims refer to Friday as their day of rest and prayer. The Jewish calendar counts Saturday as the Sabbath—the day of rest and worship.
Some countries use a separate color for the weekends and reserve the black or gray for the weekdays.
Babylonian Origins
There are many different opinions as to how the seven-day week originated, but the most common explanation is that it seems to have originated when Babylonian astrologers assigned planet gods to the days of the week around 700 BCE. The Romans later replaced these names with their own planet gods, and Germanic and Norse people later did the same with some of their gods.
Topics: Weekdays, Calendar
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Number of weeks in 2023 year is 52 weeks
Weeks are according United States calendar rules, Sunday first day and weeks are Sunday to Saturday
Week 1 | January 1, 2023 | January 7, 2023 | 7 weeks left |
Week 2 | January 8, 2023 | January 14, 2023 | 8 weeks left |
Week 3 | January 15, 2023 | January 21, 2023 | 9 weeks left |
Week 4 | January 22, 2023 | January 28, 2023 | 10 weeks left |
Week 5 | January 29, 2023 | February 4, 2023 | 11 weeks left |
Week 6 | February 5, 2023 | February 11, 2023 | 12 weeks left |
Week 7 | February 12, 2023 | February 18, 2023 | 13 weeks left |
Week 8 | February 19, 2023 | February 25, 2023 | 14 weeks left |
Week 9 | February 26, 2023 | March 4, 2023 | 15 weeks left |
Week 10 | March 5, 2023 | March 11, 2023 | 16 weeks left |
Week 11 | March 12, 2023 | March 18, 2023 | 17 weeks left |
Week 12 | March 19, 2023 | March 25, 2023 | 18 weeks left |
Week 13 | March 26, 2023 | April 1, 2023 | 19 weeks left |
Week 14 | April 2, 2023 | April 8, 2023 | 20 weeks left |
Week 15 | April 9, 2023 | April 15, 2023 | 21 weeks left |
Week 16 | April 16, 2023 | April 22, 2023 | 22 weeks left |
Week 17 | April 23, 2023 | April 29, 2023 | 23 weeks left |
Week 18 | April 30, 2023 | May 6, 2023 | 24 weeks left |
Week 19 | May 7, 2023 | May 13, 2023 | 25 weeks left |
Week 20 | May 14, 2023 | May 20, 2023 | 26 weeks left |
Week 21 | May 21, 2023 | May 27, 2023 | 27 weeks left |
Week 22 | May 28, 2023 | June 3, 2023 | 28 weeks left |
Week 23 | June 4, 2023 | June 10, 2023 | 29 weeks left |
Week 24 | June 11, 2023 | June 17, 2023 | 30 weeks left |
Week 25 | June 18, 2023 | June 24, 2023 | 31 weeks left |
Week 26 | June 25, 2023 | July 1, 2023 | 32 weeks left |
Week 27 | July 2, 2023 | July 8, 2023 | 33 weeks left |
Week 28 | July 9, 2023 | July 15, 2023 | 34 weeks left |
Week 29 | July 16, 2023 | July 22, 2023 | 35 weeks left |
Week 30 | July 23, 2023 | July 29, 2023 | 36 weeks left |
Week 31 | July 30, 2023 | August 5, 2023 | 37 weeks left |
Week 32 | August 6, 2023 | August 12, 2023 | 38 weeks left |
Week 33 | August 13, 2023 | August 19, 2023 | 39 weeks left |
Week 34 | August 20, 2023 | August 26, 2023 | 40 weeks left |
Week 35 | August 27, 2023 | September 2, 2023 | 41 weeks left |
Week 36 | September 3, 2023 | September 9, 2023 | 42 weeks left |
Week 37 | September 10, 2023 | September 16, 2023 | 43 weeks left |
Week 38 | September 17, 2023 | September 23, 2023 | 44 weeks left |
Week 39 | September 24, 2023 | September 30, 2023 | 45 weeks left |
Week 40 | October 1, 2023 | October 7, 2023 | 46 weeks left |
Week 41 | October 8, 2023 | October 14, 2023 | 47 weeks left |
Week 42 | October 15, 2023 | October 21, 2023 | 48 weeks left |
Week 43 | October 22, 2023 | October 28, 2023 | 49 weeks left |
Week 44 | October 29, 2023 | November 4, 2023 | 50 weeks left |
Week 45 | November 5, 2023 | November 11, 2023 | 51 weeks left |
Week 46 | November 12, 2023 | November 18, 2023 | 52 weeks left |
Week 47 | November 19, 2023 | November 25, 2023 | 53 weeks left |
Week 48 | November 26, 2023 | December 2, 2023 | 54 weeks left |
Week 49 | December 3, 2023 | December 9, 2023 | 55 weeks left |
Week 50 | December 10, 2023 | December 16, 2023 | 56 weeks left |
Week 51 | December 17, 2023 | December 23, 2023 | 57 weeks left |
Week 52 | December 24, 2023 | December 30, 2023 | 58 weeks left |