Twittercal is a free web service that connects your Twitter account to your Google Calendar. With Twittercal, you can add events easily from your favorite Twitter client.

To add events to Google Calendar via Twittercal, just add gcal as your twitter friend. Simply send direct message to gcal to add events to Google Calendar. gcal is a bot that process and forward messages to your Google Calendar. For example :

d gcal meeting with John tomorrow at 7pm

d gcal meeting with Lee on Monday, 25th of September at 9am

Due to the new Twitter policy to reduce heavy traffic from clients, the bot check for new messages every minute. The delay can be a bit longer is its request quota has been reached.