Season 27 in Diablo 3 is coming to an end on February 19 at 5:00 PM PST.
Blizzard will reveal the Season 28 start date in an upcoming Season preview blog post.
(Source)
Hello all –
Season 27 is coming to a close. Below are the times when Season 27 will end for each region.
North America – February 19 at 5pm PST
Europe – February 19 5pm CET
Asia – February 19 at 5pm KST
We will be providing a Season 28 preview soon which will include the start time for the next season. Stay Tuned!