Hey there Gwains,

Is this a holiday calendar that you have subscribed to?  The resource below will help you troubleshoot the issue you are having with date and time on your iPhone:

iOS: Troubleshooting issues with date and time - Apple Support
http://support.apple.com/en-us/HT203483

iOS: Troubleshooting issues with date and time

Learn the steps to take if your device has any of the following issues with the date and time.

 

• Incorrect date or time
• Wrong time zone being set automatically
• Issues related to automatically switching with daylight savings time

Follow these steps. Test after each step to see if the issue is resolved.

1. Ensure that the version of iOS on your device is up to date.
2. If the option to enable date and time automatically is available, turn it on. Tap Settings > General > Date & Time.
3. Ensure that your time zone is set up correctly. Tap Settings > General > Date & Time > Time Zone.

If the incorrect date, time, or time zone is being set up automatically on the device, please notify your cellular provider. In the meantime, tap General > Date & Time and turn off Set Automatically. Then set the appropriate time and time zone manually.

Note: The option to set automatically might not be available on all carriers in all countries.

Learn more

Note: If you find that your device's time is incorrect after you sync with your computer, your computer's time may be incorrect. Verify the computer's time in System Preferences > Date & Time (you may want to select the checkbox to set the computer's date and time automatically). 

 

Last Modified: Nov 17, 2014

Cheers,

Judy