What make and model thermostat/programmer is that?

Mine is a Sunvic one (actually two). I can't remember the model, although I
bought them from B&Q for 30 quid.

They work slightly unusually in that rather than having 2 or 3 on/off
periods a day, you set up day types that you assign to each day. Each day
type is set up with hourly granularity where each hour can be "on" or "off".
The "on" and "off" temperatures are set elsewhere. The best thing about this
method is that the day's profile is always shown on the screen as a series
of 24 dots, so you can tell at a glance if you are about to be plunged into
coldness.

In any case, most programmable room thermostats have set back and the other
features I mentioned.

Christian.