Why does BBC2 put the Culture Show on at 7pm on a Thurs?

[Cam]

Its dd's bathtime/start of bedtime routine.
Oh I know she's 8 but I still have be involved.

Mine were in bed

I wish it was on Friday though - there's nothing on tonight. Am really fed up after seeing the trail for The West Wing - we can't get freeview and aren't allowed a satellite dish.