daylighthours
nounUK /ˈdeɪlaɪt ˈaʊəz/
US /ˈdeɪlaɪt ˈaʊərz/
The time when the sun is up and it is light outside.
In summer, the daylight hours are longer than in winter.
OTHER MEANINGS
2. The number of hours in a day when there is natural light.
The plant needs at least six daylight hours to grow well.
3. The period of a day when people are usually awake and working.
She spends most of her daylight hours studying.
4. The time between sunrise and sunset.
The daylight hours in December are short in the north.