iCloud: Change the language or time zone on iCloud.com
Change the language on iCloud.com
Go to Settings on iCloud.com, click the current language, then choose a new language from the pop-up menu.
Change the time zone on iCloud.com
Go to Settings on iCloud.com, click the current time zone, then click the map near the place whose time zone you want to use.
To pick a different place in the selected time zone, click the time zone name at the bottom of the map, then choose a place from the pop-up menu.
Click outside the map pop-up to apply your changes.