Hi All,
Recently I had a requirement where a client wanted to show complete year calendar on page with following requirements.

1) We can pass any year to calendar and it must print the complete year (12 month) calendar
2) It must have provision to highlight the holidays
3) It must be printed or saved or emailed as PDF also

To achieve it, i first find the jQuery UI DatePicker best fit. But there is a issue with this approach. JS does not work properly when we do RenderAs pdf in vf pages. So, this approach will not work.
Then finally I come up with my own solution by making native salesforce approach -  SFC Component. Feature for this are as below:

1) We can pass the component year and month
2) We can pass the component holidays list as well


Here is the syntax how you can use this:


Above syntax will print July, 2013 calendar


Above syntax will print July, 2013 calendar. In addition it will also highlight the 25th and 30th of the month as holidays

You can download the code from here:
http://www.aslambari.com/salesforce_calendar.html

You can see the working demo here
http://labsprojects-developer-edition.ap1.force.com/FullYearCalendar?year=2013

You can change the year parameter from url to see the calendar for different years on the above demo. For demo purpose i have highlighted few dates as holidays (orange color).

In the code, i have used some styles for printing calendar like holidays highlight. You can simply change those style to match up your theme.