Google Calendar now offline

Google Calendar can now be accessed offline. You can now see your Google Calendar events when you're disconnected. Offline Calendar lets you view your existing schedule and events, but not edit them, so you don't have to print out calendars the night before a trip.

Like Gmail, the offline feature of Calendar uses Gears, an open source browser extension that adds offline functionality directly to the browser. To enable offline Calendar access, sign in to Google Calendar and look for the "Offline Beta" link in the upper right-hand corner of your account, next to your username.

In addition to offline mode, you can see your calendar when you're away from your desk using two-way sync for iPhone, Android, Windows Mobile and Blackberry devices. So wherever you go, Google Calendar can be there with you.

Official Gmail Blog: View Google Calendar offline