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Thread: Solstice calculation problem

  1. #1 Solstice calculation problem 
    Junior Member
    Join Date
    Oct 2017
    Hi eneryone,

    I need some help with this question:

    "The period when the altitude of the Sun lies beween 0◦ and −6◦ is defined as ‘civil twilight’.

    Calculate at what latitude it is still just twilight at midnight on the summer solstice."

    Is it to do with the Earth's tilt of approximately 23◦ and the tropic of cancer (for N hemisphere), giving me an answer of about 23.5 ◦?
    Last edited by electrogeek; 10-10-2017 at 09:58 PM.
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