Google Calender is now available for public. You can login to it using your google account.
With Google Calendar, you can see your friends’ and family’s schedules right next to your own. Quickly add events mentioned in Gmail conversations or saved in other calendar applications and add other interesting events that you find online.
You decide who can see your calendar and which details they can view. Planning an event? You can create invitations, send reminders and keep track of RSVPs right inside Google Calendar. Organizations can promote events, too.
You can set up automatic event reminders, including SMS notifications, and instantly bring up anything on your calendar with the built-in search tool. Will let you know more in detail when i start looking into it.