It sounds like you have calendars on your Mac that you want to sync to your phone.
You can sync this content in iTunes with these steps:
Sync contacts and other info with iPod touch, iPhone, or iPad
- Connect your iPhone, iPod touch, or iPad to your computer and select your device.
- Click the Info button and select the items you want to sync.
- Click Apply.
From: iTunes 11 for Mac: Sync contacts, calendars, and other info with iPod, iPhone, or iPad
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