24 hours
Different Answer:
Between approximately April 18th and August 24th, there is continuous daylight in Longyearbyen, and between approximately October 26th and February 15th, there is constant darkness.
The sun rises and sets each day between February 16th to April 17th, with daylight increasing from 0 hours to 24 hours and between August 25th to October 25th, with daylight decreasing from 24 hours to 0 hours.
Between late October - mid November and between late January - mid February there is twilight in the southern sky at noon in Longyearbyen and around the equinoxes there are 12 hours of daylight, like the rest of the world.
1,000,000 days and nights
Depends immensely on where you are (Norway is long) and time of year.
The northernmost countries of Europe: Norway, Sweden Finland and Iceland. The further north you go the longer the days are in summer, and the longer the nights are in winter.
89 days
for 40 days and nights
for 40 days and nights
About 121 Earth days
During summer, the days are long and the nights are short. During winter, the days are short and the nights are long.
Gilgamesh wept for Enkidu for seven days and nights.
31 days.
forty days and forty nights
about 121 earth days