Change SharePoint 2013 Online (Office 365) to use your local time zone

If you upload your documents only to find that your Modified time stamp is hours off, your SharePoint Online site may be using the wrong Regional Setting for your Time Zone. This is generally set to Pacific Time (US and Canada) by default. Here are the steps to correct it:

1. In your team site, click Site Actions.

2. Click Site Settings.

3. On the Site Settings page, under the Site Administration section, click Regional settings.

4. In the Time Zone section set the Time zone drop-down list to the appropriate zone for you.

5. Click OK.