iCloud: Change the language or time zone on iCloud.com
You can use the Settings app on iCloud.com to change the language and time zone for all iCloud.com apps. You might want to change the time zone if you travel to a new time zone and want your calendar events to show up at the local time in the Calendar app 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.