Q: my apple tv was working this morning, and now all of a sudden the date

Hi paulmac1974,

Below is the basic troubleshooting guide for Apple TV.

Restarting the modem and the Apple TV is a good first step.

Apple TV: Basic troubleshooting

http://support.apple.com/kb/ht1551

1. Reset Apple TV by unplugging it from the power outlet, waiting about five seconds, then plugging it in again.
2. Power off your TV, wait five seconds, then power it back on.

Apple TV (2nd and 3rd generation): Troubleshooting Wi-Fi networks and connections

http://support.apple.com/kb/TS4546

Apple TV (2nd and 3rd generation): Restoring your Apple TV

http://support.apple.com/kb/ht4367

I hope this information helps ....

Have a great day!

- Judy