Sun and moon

Grenada sits close to 12°N, so day length varies only about an hour across the whole year — from roughly 11 hours 30 minutes at the December solstice to 12 hours 50 minutes in June. There is no long summer evening and no dark winter afternoon.

Twilight is also short at this latitude. The sun drops almost vertically, so the gap between sunset and full darkness is around 20 minutes of civil twilight — useful to know if you are on the water and planning to be back before dark.