So I'm a bit confused on how thermostats can be programmed. Can they be set for one temp during the day and another for night? Or does it only allow one temp?? Sorry if my question is a bit confusing.

Basically what I mean, is I know snakes need certain hot spot temperatures during the day (let's say it's 85º)
They also need a different one for night (let's say this one is 72º)

Can I set it so it keeps the hot spot at 85º for 12-14 hours and 72º for 10-12 hours? Or if I set it at 85º will it only stay at 85º, day and night? Sorry again for the long confusing question