My programmable thermostat is set for 78 from 8AM to 4PM (working) and 74 from 4PM to 10PM, then down to 70 (sleeping) and up to 72 from 5AM till 8AM. Got all that?

Weekends are easier--74 from 7AM and 70 from 10PM to 7AM.

When I'm working hard around the house I'll sometimes reset it to 70 temporarily.