The XFINTY Thermostats are actually programmable, but you do the programming from the xfinityhome.com website by clicking on the Settings icon next to the Thermostat rather than at the Thermostat itself (a lot easier online than hitting buttons on the thermostat!).
You can set up different schedules for both heating and cooling each day of the week at whatever times you'd like. Attached is an example of the schedule I set up for heating to give you an idea of what it looks like - in the picture I'm editing the 7:30am to 4:30pm timeframe... you can drag the grid lines to make the time ranges larger or smaller, and obviously set the temp in that range to whatever you like.