You can set up HTC Wildfire S to stay in sync with the following types of calendars:

• On HTC Wildfire S, sign in to your Google Account so you’ll be able to sync the Calendar app with your Google Calendar online. You can add multiple Google Accounts.
• If you’re using Microsoft Outlook® on your computer, you can set up HTC Sync on your computer to sync Outlook Calendar with the Calendar app.

• If you have a Microsoft Exchange ActiveSync account and you've added it on HTC Wildfire S, you can sync the Calendar app with your Exchange ActiveSync calendar events.

If you’ve signed in to your social network accounts such as Facebook, birthdays and events of friends will appear in Calendar.