To customize a link to your calendar, you must first create a link to your calendar, using the “URL and RSS Links” tab in the “Advanced Features” section of the “Customize” screen.
Once you’ve created a link to you calendar, you can customize both the date and the time zone your calendar displays in when people click on that link. If you do not create a customized date/time zone, your linked calendar will use the date and time zone provided by the computer viewing the link.
Customize the Date
Customize the date by adding a date parameter (&date=yyyy-mm-dd) to the end of your URL, where “yyyy-mm-dd” is replaced by the date of your choice.