A check for Channel 4
Pick the episode and look for it as live, catch-up and on the intended device. A scheduled showing can be listed when the same episode is absent from replay. Keep the time and offer shown on the programme page in your notes.
Check the station edition
Record one programme and its scheduled local time on the broadcaster page. Compare it with the channel label and time displayed in your player.
Check the guide if the live feed works
If the programme matches the live edition but the guide is wrong, confirm the channel mapping before changing the device clock.