That varies a lot depending on the latitude, from 12 hour day throught Winter and Summer (at the equator), to the Sun being above the horizon all the time, i.e., 24-hour day (in summer, north of the northern polar circle or south of the southern polar circle), or all the time under the horizon, i.e. 0-hour day (in winter, north of the northern polar circle or south of the southern polar circle).
That varies a lot depending on the latitude, from 12 hour day throught Winter and Summer (at the equator), to the Sun being above the horizon all the time, i.e., 24-hour day (in summer, north of the northern polar circle or south of the southern polar circle), or all the time under the horizon, i.e. 0-hour day (in winter, north of the northern polar circle or south of the southern polar circle).
That varies a lot depending on the latitude, from 12 hour day throught Winter and Summer (at the equator), to the Sun being above the horizon all the time, i.e., 24-hour day (in summer, north of the northern polar circle or south of the southern polar circle), or all the time under the horizon, i.e. 0-hour day (in winter, north of the northern polar circle or south of the southern polar circle).
That varies a lot depending on the latitude, from 12 hour day throught Winter and Summer (at the equator), to the Sun being above the horizon all the time, i.e., 24-hour day (in summer, north of the northern polar circle or south of the southern polar circle), or all the time under the horizon, i.e. 0-hour day (in winter, north of the northern polar circle or south of the southern polar circle).