sleep by/at night
100408
What's the difference between “by night” and “at night”?
134982
Are 'by the time' and 'when' interchangeable?
27288
Possible to run scripts on sleep and wake?
109324
Word for someone who sleeps during the day
130571
time.sleep -- sleeps thread or process?
120753
"On/at/for/over the weekend" in American English
81925
Can you short rest during a long rest?
90107
Is there a synonym for “day” that can go with “at night”, “at dusk”, “at dawn”?
19343
"By foot" vs. "on foot"
111811
Substitute for sleep function in Qt/C++
23081
Difference between wait() and sleep()
111455
When can we omit the preposition "on" before weekdays
3379
How to use nanosleep for sleeping random amounts of time?
86883
Subject + am/is/are + to + verb
113520
Lock without going to sleep
17739
Which "mean" to use and when?
16321
"An hour" or "a hour"