Using ical on your mac and Google calendar it is possible to sync all of your calendars, share them with different people, update from any computer and embed them into websites and wikis like this. You can also organise meetings and track many other things. Here is a snapshot of a couple of those things. If you use a PC it is possible to sync with sunbird.

Google calendar



Sync with ical

Google help has a good tutorial to show you how to add a google calendar to ical.


Embedding

You can embed Google calendars into wikis, blogs and websites. This is a powerful feature and combined with the features above will allow you to update dates in different places quickly with one calendar from your desktop.