by day

(redirected from by night)

by day

 and by night
during the day; during the night. (Often used in simultaneous clauses for contrast.) By day, Mary worked in an office; by night, she took classes. Dave slept by day and worked by night.
References in classic literature ?
Tell them I think of them by day, pray for them by night, and find my best comfort in their affection at all times.
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