I've been seeing lots of requests for calendar templates lately, both on the Adobe forums and elsewhere.
For that reason, I'll again suggest visiting the Incompetech.com site I mentioned above.
The link below will take you to a "by-the-month" PDF calendar generator. Enter values for document size, language and the year, and the script will generate a savable PDF which you may then edit further if you choose.
Pay attention to the linksthere are also generators for yearly calendars and one that generates calendars that show only weekdays (Monday through Friday).