One Gregorian calendar year has approximately 52 weeks.
One Gregorian calendar common year has 365 days:
1 common year =365 days =(365 days) / (7 days/week) =52.142857 weeks
=52 weeks + 1 day
One Gregorian calendar leap year occures every 4 years, except for years that are divisible by 100 and not divisible by 400.
One Gregorian calendar leap year has 366 days, when February has 29 days:
1 leap year =366 days =
(366 days) / (7 days/week) =
52.285714 weeks =52 weeks + 2 days
| Year | Leap | Weeks in a Year |
|---|---|---|
| 2013 | no | 52 weeks + 1 day |
| 2014 | no | 52 weeks + 1 day |
| 2015 | no | 52 weeks + 1 day |
| 2016 | yes | 52 weeks + 2 days |
| 2017 | no | 52 weeks + 1 day |
| 2018 | no | 52 weeks + 1 day |
| 2019 | no | 52 weeks + 1 day |
| 2020 | yes | 52 weeks + 2 days |
| 2021 | no | 52 weeks + 1 day |
| 2022 | no | 52 weeks + 1 day |
| 2023 | no | 52 weeks + 1 day |
| 2024 | yes | 52 weeks + 2 days |
| 2025 | no | 52 weeks + 1 day |
| 2026 | no | 52 weeks + 1 day |
| 2027 | no | 52 weeks + 1 day |
| 2028 | yes | 52 weeks + 2 days |
| 2029 | no | 52 weeks + 1 day |
| 2030 | no | 52 weeks + 1 day |