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Sunrise/Sunset Calculations.

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  • Sunrise/Sunset Calculations.

    Hi all,

    I need some help with the below question;

    In a sunrise/sunset table given for the 28th of June at a certain latitude, sunrise is given as 0239 and sunset is given as 2127. What is the latitude?

    A) 00 N/S
    B) 55 S
    C) 80 N
    D) 60 N

    The answer is apparently D) however I cannot for the life of me remember how to calculate the latitude from a sunrise or sunset time and the question bank that I'm using doesn't give an explanation.

    Any help would be greatly appreciated.


  • #2
    I think you don't have to calculate anything.
    The question states 28 June, so it's summer in the N hemisphere and winter in the S. The question also states that day duration is from 0239 to 2127-->very long day -->summer day-->So it's in N hemisphere.

    The day lenght increases with latitude in summer, and in the poles it becomes a continous day (the sun never sets). 80N is in the pole, so the only possible answer is 60N.