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day or night

day or night

20 2.4
Available at any time, both during the day and at night
  • idiom
translation icon : a cualquier hora
  • Ring me, day or night, if you decide you need my help.
  • at any time of day or night

And it creates the feeling of sleepiness independent of time of day or night.

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Examples

  • If it's an emergency, you can call me any hour, day or night.

    Fiction book (1994)
  • You can go in any time day or night.

  • So whether day or night, this thing is putting in work.

  • Hope you have an amazing day or night and I will see you all next time.

  • Family and friends are welcome any hour, day or night.

  • Come on up, any hour, day or night.

    Fiction book (1996)
  • I can walk down the streets any time of day or night.

    Blog text (10)
  • Call me anytime, day or night.

  • I want you to know that you can call me anytime you want, day or night.

  • You can reach customer service day or night if you have any questions.

Synonyms

day-and-night
vsday or night
97 3.9

Happening at all times, day and night

allows use when needed rather than being only nonstop
around the clock
vsday or night
59 3.0

Happens all day and all night without stopping

covers also sporadic or needed actions, not only uninterrupted action
round-the-clock
vsday or night
24 3.9

Happening all day and all night without stopping

permits occasional use when needed instead of nonstop continuity
around-the-clock
vsday or night
8 3.2

Happening all day and night without stopping

is for occasional or on-demand use rather than continuous running
round the clock
vsday or night
7 3.0

Happens all day and night without stopping

allows use as needed rather than requiring nonstop operation
every second of the day
vsday or night
  • Informal
1 2.5

All the time without stopping

allows use whenever needed rather than insisting on literal nonstop time

How Long

day or night
20 2.4
all night long
117 1.8

Surface Forms

day or night singular

Morphology

day + or + night

The meaning 'at any time' is directly and transparently derived from combining the known time words 'day' and 'night' with the coordinator 'or' to indicate either period (i.e., whenever). This simple compositional pattern is cross-linguistically common and readily understandable to a B1 learner who knows the constituent words.

Etymology

Day or night comes from the simple picture of both the day and the night, the two opposite parts of the 24 hours; saying both together creates a strong image of something happening 'at any time'.