Board Thread:Wiki Help Desk/@comment-43518064-20191111061743/@comment-36945580-20191111075954

The wiki uses the UTC timezone, it could've been that the timezone entered the next day before yours did. Also, the timezone cannot be changed as it is used for all the servers in fandom.

Source: https://community.fandom.com/wiki/Help:Achievements#Frequently_Asked_Questions_.28FAQs.29