Akademik

keep regular hours
keep regular/late/etc hours phrase
to perform the same activities every day at regular/​late etc times, especially going to bed and getting out of bed
Thesaurus: going to bed, getting up and staying in bedhyponym to sleep, or to go to sleepsynonym
Main entry: hour

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I
do the same thing at the same time every day
II
do the same thing, esp. going to bed and getting up, at the same time each day

Useful english dictionary. 2012.