Series recording starts 3 hours early

I have a series recording set up for America's Got Talent, and the guide shows every episode airing Tuesday nights at 8 PM as scheduled to record. However, while it does record the correct channel, the recording is three hours early - i.e. I am in the Pacific time zone, but the device thinks the show starts at 8 PM Eastern. It is only this particular program that has the problem; all other series recordings, including others on the same channel, work fine.