5:30am-7:30am : 22 degrees C
4:30pm-6pm: 22 degrees C
6:10pm-9:20pm: 14 degrees C
Oil radiator for bedroom (1500 watts) from 9:30pm-10pm.
Presumably, the heating thermostat is set at 14 degrees at 6:10pm, but the house is a nice toasty 22 degrees and slowly cools down.
I agree with others, though, that you should just keep the heating on until 9pm or so, and the house should still be warm for a good few hours after that until you go to bed.