Select your preferred language, time zone, and date format.
Set Preferred Webapp Language
To select your preferred language for the webapp:
Click Settings
Click Profile
Click Profile & personalsettings
Open the Language drop-down menu
Select your preferred language
Click Save 

Set Time Zone for the Webapp and E-Mail Notifications
The selected time zone in the Webapp is applied to any dates but also e-mail notifications if you configure a specific time for daily notification e-mails. To configure your time zone: