Okay - currently, the server process is being stopped and started 4 times in 24hrs. (8:00, 14:00, 20:00 02:00 CET).
That's what I can control for you, so let me know, I think 20:00CET - 19:00UK time would be best. For now...
You can edit the Scheduled task yourself, by disabling the triggers you do not want.