If you want to display your Mac's iCal calendar on your website, you must embed it in HTML. This requires having it hosted online so the HTML code has somewhere to link to. Apple's iCal software makes putting the calendar online simple. It also will automatically update when you update iCal on your computer. This ensures that the HTML calendar on your website will always be up-to-date.
Open your iCal calendar.
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Select "Publish" from the "Calendar" menu.
Give the calendar a name, then click "Publish."
Enter your MobileMe account information, if prompted. Most Macs will have this information already logged since all users must create one when they register their computer.
Copy down the URL address of your calendar.
Open your HTML code and insert the following where you would like the calendar to appear:
Replace "URL" with the address you copied in Step 5. The iCal calendar is now embedded in the HTML.