Windows 7: tv guide listings out of sync

so my tv guide listings are about 30 mins out of sync ive already updated the listings about 3 times i would like to be able to record shows but cant record what i want because the times are off any help?

30 minutes seems strange, so doesn't seem to be timezone related(only a couple timzones are 30 minutes off). Double check the system time didn't get inadvertently out of whack, then check the time in BIOS maybe? Then run through the WMC setup again and make sure you have your zip code in right? I've never seen that before but those would be the steps I would take if you haven't already. Good luck.

well thanks for the ideas system and bios times are correct i just built this computer and this is the only problem that i am having ill try to setup wmc again

thanks