Correct Your Gmail Time Zone
To set your Gmail time zone:
- Click the gear in your Gmail's top right corner.
- Select Mail settings from the menu that comes up.
- Go to the Accounts and Import tab.
- Follow the Other Google Account settings link under Google Account settings:.
- Select Products on the left.
- Click Log into Dashboard under Dashboard.
- If prompted:
- Type your Gmail password under Password.
- Click Sign in.
- Now follow the Edit personal information link under Account.
- Select the correct time zone under Time zone:.
- If you cannot find the correct city or time zone, try checking Show all timezones.
- Click Save.
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Source:Â http://email.about.com/od/gmailtips/qt/set_time_zone.htm