晝 zhòu

day and night; round-the-clock

lit. to make night as day (idiom); fig. to burn the midnight oil

to make day as night (idiom, from Book of Songs); fig. to prolong one's pleasure regardless of the hour

as bright as daylight (idiom)

day and night (to toil, to abandon oneself to pleasure etc)

to travel at night and lie low by day (idiom)

Zai Yu sleeps by day (idiom); refers to story in Analects of Confucius remonstrating bitterly with his student for sleeping during lectures

to hide by day and come out at night; nocturnal

day and night; continuously, without stop

the equinox

circadian rhythm

the winter days are short and the nights long (idiom)

daytime