How Long Is 52 Weeks

How Many Weeks Are In a Year?

| Last update: 28 February 2020

Whatever impatient soul counting down to their adjacent birthday, almanac holiday or festival is going to need 52 weeks' worth of patience, because that's the length of a complete year.

A normal yr in the 'mod' calendar has 365 days, which, when divided by 7 (Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Dominicus) equals 52.1428571 weeks.

Every four years, there is a spring twelvemonth*, adding an actress day into the calendar (compassion those 17 year olds born on February 29th 2000, who accept only had 4 true birthdays). In this case, the calculation is 366 divided past 7, which equals 52.2857, so it'south notwithstanding merely 52 weeks.

This is all based upon the Gregorian calendar (introduced back in 1582), which cycles every 400 years. If you lot desire to go a footstep further and work out the boilerplate number of weeks in a year beyond the full Gregorian calendar, you'll find that a twelvemonth works out at 365.2425 days. When divided by 7 it gives you a total of 52.1775 weeks.

Summary of years

Year type	Number of days	Number of weeks	Comments
Lunar	354.37	50.6242857	Muslim calendar twelvemonth
Common twelvemonth	365	52.1428571
Gregorian (average)	365.2425	52.1775
Julian	365.25	52.1785714	used in astronomy (computing the altitude covered by a light-yr, etc)
Spring year	366	52.2857143

Here'southward a table to show you how common years from the Gregorian calendar are cleaved down into weeks and days:

Weeks in a year tabular array

Year	Number of weeks	Number of days	Leap year?
2015	52 weeks and 1 day	365	-
2016	52 weeks and 2 days	366	yes
2017	52 weeks and 1 day	365	-
2018	52 weeks and 1 day	365	-
2019	52 weeks and i day	365	-
2020	52 weeks and 2 days	366	yes
2021	52 weeks and one day	365	-
2022	52 weeks and ane day	365	-
2023	52 weeks and one twenty-four hour period	365	-
2024	52 weeks and 2 days	366	yes
2025	52 weeks and 1 day	365	-

The exception to the "52 weeks" rule pops up if yous're using a fancy academic journal or office wall planner; sometimes they number the weeks based on them running from Sunday to Saturday, or Monday to Sunday, breaking up the first and last weeks of the twelvemonth to fit this mould. Although in that location are notwithstanding only 52 weeks in the twelvemonth, and time doesn't magically slow down**, the way a agenda similar that counts fragments at the outset and finish of the yr might mean that the weeks are numbered as high as 54. E.g.:

WEEK 1: Thursday 1 January, Fri 2 January, Saturday 3 January, Sunday 4 January
Calendar week 2: Monday v January, Tuesday half dozen January....

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*An extra note nearly leap years...

Leap years exist to right a small-scale margin of fault in our almanac calendars. A complete orbit of the sun actually takes Earth 365 days and v hours, 48 minutes. To recoup for the actress time, every 4 years nosotros add an actress 24-hour interval to the calendar to maintain accuracy (otherwise we would exist out by 24 more days every century).

There are 3 criteria to decide a spring twelvemonth. Julius Caesar introduced the idea 2000 years ago, defining any year which could be cleanly divided by four as a leap year. Even so, this made also many jump years and would still create an imbalance of time, so there is a checklist of 3 features any leap yr should accept...

Leap year checklist

The number of the year can be divided by 4
If the year tin exist divided past 100, then it's Not a leap year, except...
If information technology can also be divided by 400, in which case, OK, information technology's a bound year.

** Talking of time travel...

In 1752, Europe was using the more accurate Gregorian agenda, which we nevertheless use today, but U.k. was dragging its heels with the Julian calendar. The large switch happened in September that year, only to grab upward with everyone else and to correct the accrued inaccuracy of the Julian calendar, English language folk went to bed on Wednesday 2nd September 1752, and woke up on Thursday 14th September 1752. Some sources claim that members of the public rioted, outraged that their lives had been 'shortened' by 11 days! If you want to know how many days have passed since that big switch, by the way, give our days between dates computer a endeavor.

How many days since...?

Years go by then rapidly, have you ever stopped to wonder but how many days you've been alive for? If then, y'all'll be delighted to hear about our funky age calculator tool. Give it a endeavor!

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