day and night; round the clock; a period of 24 hours

daytime; the hours of daylight

regardless of whether it is day or night; continuously; round-the-clock

To hide away during the day and come out at night; used to describe the activity patterns of animals or certain people.

The phenomenon occurring within the Arctic and Antarctic Circles where the sun stays above the horizon for a full 24 hours, also known in Taiwan as [[永昼|永晝|yong3 zhou4]]

(literary) day and night without stopping; continuing unceasingly; to work or move tirelessly regardless of the time

To hide or sleep during the day and come out or travel at night; often used to describe avoiding being seen or caught.

to take a nap; to sleep during the day

the moon shines as bright as daylight

(idiom) to travel or march under cover of night and remain hidden during the daylight hours

to turn day into night; to sleep or carouse throughout the day and stay up at night regardless of the hour

the period of time from sunrise until noon

to burn the midnight oil; to work or play especially hard through the night

to continue an activity day and night; to indulge in pleasure or work without ceasing; a variant form of the phrase meaning day and night

(idiom) day and night without stop; to carry on without restraint, typically referring to endless partying or toiling away

Zai Yu sleeps during the day; an idiom referring to a story from the Analects of Confucius where he scolds his student for sleeping during lectures, used to describe a person who is lazy and beyond hope

To stay hidden during the day and come out to move or act at night; describes animal habits or the behavior of thieves and fugitives

(literary) high noon; the middle of the day

the time or date at which the sun crosses the celestial equator, when day and night are of equal length

circadian rhythm; the internal 24-hour cycle of biological processes in living things

the time between sunrise and sunset; daytime; day

a condition in which a person can see clearly in dim light but is partially or totally blind in bright light; also called hemeralopia

(idiom) the days are short and the nights are long, referring to the shorter periods of daylight during winter

active during the day rather than at night; diurnality

(literary) a long summer day; long-lasting daylight

the long, hot, and seemingly endless days of midsummer

(literary) describes something that is bright and eye-catching both in the daytime and at night; originally refers to peach blossoms being radiant in the day while plum blossoms appear bright white at night

literally "to walk in embroidered clothes during the day"; describes someone returning to their hometown after becoming successful or attaining a high official position, especially to show off their wealth and status

to parade in one's hometown wearing fine silk clothes during the daytime; to return home after achieving great success or high status