This website has a countdown timer which shows the remaining time until the next season starts/ends. If you want to find out how long it takes for the next or current season to start or end, a visit at this page is the only thing you need. Background images are from Blizzard Entertainment. I do not own the images. The copyright belongs to Blizzard Entertainment.
The season start/end dates are based on data from the last few years, the upcoming dates are estimated. The season dates are getting updated occasionally when more information gets released.
I will try my best to keep the dates updated. Please note the small red or green label which shows whether the date has been confirmed or not. If you find wrong dates, I would appreciate if you would contact me about that.
If you have any questions or feedback feel free to contact me. Click here