Nathan Oddfellow has made an awsome calender called PixelTrix Photo Calendar 1.0.7 that has soo many features his store is called PixelTrix.
The calender is upstairs.Its only 400L. i have one myself

^^ i hope i was helpful.
Location is below
http://slurl.com/secondlife/PixelTrix/126/60/23Its so cool you can even place photos on the calender of your choice in each month. Features listed below.....
Features
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* Months start on the right day for all future years, including leap years, through 2099. No need to buy a new calendar each year.
* Schedule reminders, post events, and display images behind the days of your calendar.
* Versatile scheduling system can handle everything from a single day, to a weekly occurrence, to daily events for a month.
* Flip through past and future months quickly and easily.
* Automatically marks off past days.
* Access list for who is allowed to read the calendar, also allows "Group" or "Anyone" access if you prefer.
* Rez a small or large display board that lists all events for a day when a day is clicked on the calendar. Also says the events in chat (private messages them when clicked by the owner, or whispers them when clicked by anyone else) so you can cut down on prims and scripts by not using a display board.
* Supports multiple notecards for event/image/reminder lists. So each of your hosts can give you a seperate notecard for their events and you can simply drop them all into the calendar at once.
* Background is color-changable so your calendar fits with any decor.
* Available in 3 versions:
Standard Calandar - Everything you need and nothing you don't.
Photo Calendar - Displays 12 default monthly images or 12 of your own.
Pocket Calendar - Fits on your HUD to use no prims and always be at hand.