I think you mean "fort-night", the it is 2 weeks or 14 days
A night on Callisto is 8.35 days since a full day (including night) is 16.7 Earth days long.
Though the Moon always shows just one face to Earth, it revolves around the Earth in about 28 days. You would expect that 14 of those [Earth] days on the Moon would be Sunlit and 14 in darkness. [one fortnight for sunlight and the same for night] So a Moon day takes about 14 times 24 Earth hours, and as many for a night on the Moon.
the moon
I notice subtle changes in the moon's appearance every night. So you can tell from one day to the next, if you watch carefully.
A fort-night is 2 weeks, so 42.
I think you mean "fort-night", the it is 2 weeks or 14 days
two syllables: fort-night
30
five
1
five
A fortnight (one word) is 14 days or two weeks. English dictionary.
14 days (2 weeks)
It lasted only a matter of days.
Siege of Fort William Henry happened on 1757-08-09.
It would take 2-3 days, it is 27 hours of driving.