Getting warm

The thermostat is set to 16 degrees at 10 am.  Not before, because our smart thermostat will start heating before the time I set.  I've never noticed that before, but on this second day of self-isolation I was awakened by the heating boiler coming on at 20 past 7. The living room had to warm up from 14 to 16 degrees by 8 o'clock. I was quite panicked and changed the thermostat settings from 16 degrees at 8 to 10 am.

I spent the day sleeping on the couch. In the sun. The room temperature without heating raised to 16.5 degrees.
Bert is feeling a bit better, but he was also the first to get sick.