Users of Google Calendar in Google Apps can now bring their Google Calendar offline. But unlike Offline Gmail than run with half functionality (you can star, label, compose and reply email) even when they disconnected from internet (it will be sent later once connected), Offline Calendar only let you view the existing schedule and events, but not edit them.

To enable this feature, sign in to your Google Apps’s Calendar, and click the ‘Offline Beta‘ link available on the upper right-hand corner of your account (screen shot below)

The feature availability depend on the version you use. Google Apps Standard Edition (free version that I use) users  has this feature available immediately.

But Premier and Education Edition users has to wait the domain administrators to first check the box next to ‘Turn on new features‘ in the ‘Domain Settings‘ page of the Google Apps control panel before they can enable this option.

Unfortunately, this feature has yet available for ordinary Google account’s Calendar. Maybe soon??