Season 12 of League of Legends started on January 4, 2022 and will likely end somewhere in the middle of November 2022. The length of a League of Legends season used to vary dramatically sometimes as long as 406 days (season 1) to as short as 296 days (season 6). As seasons have continued over the years, Riot has slowly settled on how long a season will be to around 300 days and will typically begin them in January and end in November.
| Season | Start Date | End Date | Total Days |
|---|---|---|---|
| 1 | July 13, 2010 | August 23, 2011 | 406 |
| 2 | November 29, 2011 | November 12, 2012 | 349 |
| 3 | February 1, 2013 | November 11, 2013 | 283 |
| 4 | January 10, 2014 | November 11, 2014 | 305 |
| 5 | January 21, 2015 | November 11, 2015 | 294 |
| 6 | January 20, 2016 | November 8, 2016 | 293 |
| 7 | December 8, 2016 | November 7, 2017 | 334 |
| 8 | January 16, 2018 | November 12, 2018 | 300 |
| 9 | January 23, 2019 | November 19, 2019 | 300 |
| 10 | January 10, 2020 | November 10, 2020 | 305 |
| 11 | January 8, 2021 | November 25, 2021 | 321 |
| 12 | January 4, 2022 |