I am a natural night owl, and can be a grumpy a**hole in the mornings.
However, I need my 8-9 hours sleep so I will go to bed according to when I have to be up. When in a routine, I can get to sleep after 45-60 minutes (I absolutely have no ability to switch my mind off, ever) even if that's a 10pm turn in.
If, like this week, I don't have to be up for work or anything, I find that I'm up until 2-3am. In the winter it can be later, but this time of year at the height of Summer, I need to go to bed by 2.30am at the latest otherwise the birds will keep me awake once they wake up around 3.30ish when it starts to get light outside.
Bed time has to be perfectly dark and perfectly silent.
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AQ: 36
EQ: 11
Aspie Score: 156/200 NT Score 68/200
RAADS-R: 140