A week is a unit of time that has 7 days. There are approximately 52 weeks in a year.
Days in a Year
The definition of a year is the amount of time it takes our planet, Earth, to make one revolution around the Sun.
A day is the time it takes the Earth to make one rotation on its axis.
Earth rotates on its axis about 365.2422 times a year.
In the Gregorian calendar (introduced in October 1582), the days in a year were shortened to 365 days. Then, every leap year it plays “catch up” by having an extra day in February.
Exact Weeks in a Year
Because there are 365 days in a normal year, there are actually 52.1 weeks in a year, or 52 weeks + a day.
365 Days (per year) ÷ 7 Days (per week) = 52.1428571429 Weeks in a year
A leap year has 366 days, which is equal to 52.3 weeks, or 52 weeks + 2 days.
Weeks in Every Year
Every year has 52 weeks + 1 day, except leap years that have 52 weeks + 2 days.
|Year||Leapyear?||Days in year||Weeks in year|
|2019||No||365||52 weeks + 1 day|
|2020||Yes||366||52 weeks + 2 days|
|2021||No||365||52 weeks + 1 day|
|2022||No||365||52 weeks + 1 day|
|2023||No||365||52 weeks + 1 day|
|2024||Yes||366||52 weeks + 2 days|
|2025||No||365||52 weeks + 1 day|
|2026||No||365||52 weeks + 1 day|
|2027||No||365||52 weeks + 1 day|
|2028||Yes||366||52 weeks + 2 days|
Weeks in a Month
Every month with 31 days has 4.4 weeks (4 weeks + 3 days).
Months with 30 days have 4.3 weeks (4 weeks + 2 days).
February is the shortest month with 28 days that equals exactly 44 weeks. However, in a leap year, it has 29 days and 4.1 weeks (4 weeks + 1 day).
|Month||Days in month||Weeks in month|
|January||31||4.4 weeks (4 weeks + 3 days)|
|February||28; 29 in leap year||4 weeks; 4.1 weeks (4 weeks + 1 day)|
|March||31||4.4 weeks (4 weeks + 3 days)|
|April||30||4.3 weeks (4 weeks + 2 days)|
|May||31||4.4 weeks (4 weeks + 3 days)|
|June||30||4.3 weeks (4 weeks + 2 days)|
|July||31||4.4 weeks (4 weeks + 3 days)|
|August||31||4.4 weeks (4 weeks + 3 days)|
|September||30||4.3 weeks (4 weeks + 2 days)|
|October||31||4.4 weeks (4 weeks + 3 days)|
|November||30||4.3 weeks (4 weeks + 2 days)|
|December||31||4.4 weeks (4 weeks + 3 days)|