My sleepy time this weekend + monday:
02:00 - 08:00, 14:00 - 23:59 on Saturday
00:00 - 11:00, 13:00 - 19:00, 22:00 - 23:59 on Sunday
00:00 - 06:00 on Monday
Summary:
41 hours of 54 hours available spent on sleeping
Ratio:
~0.76 sleepyhours/hour

I feel terribly useless