Q: transfer calendar from iphone 4 to iphone 5c

Hi KarenW13,

I understand you want to transfer your Calendar from your iPhone 4 to your new iPhone 5C.  If you are using iCloud for your calendar, contacts, etc, then all you have to do is backup your iPhone 4 to iCloud and restore your new iPhone from that backup.  The resource below may help:

Transfer content from an iPhone, iPad, or iPod touch to a new device - Apple Support
https://support.apple.com/en-us/HT201269​

Have a great weekend!