Day-or-night meaning

The cliff's sheer drop created a natural defense against any intruders in addition to providing a view that was breathtaking by day or night.

A senior obstetrician must be available, day or night in most obstetric units.

Short-Eared owls are active at any time of day or night.

Strawberries and other plants contain a chemical called phytochrome that tells them whether it is day or night and how long the day is.

Don't panic - once you're covered, call day or night for help from approved tradespeople.