Why is the Standard Meridian selected by a country a multiple of 7.5°?​

Question

Why is the Standard Meridian selected by a country a multiple of 7.5°?​

Jezebel 1 year 2021-08-30T20:46:01+00:00 0

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    0
    2021-08-30T20:47:22+00:00

    Because 15 degrees of longitude is equivalent to 1 hour in time (that is 360 / 24) it is convenient to adopt time zones at 7.5 degrees or 15 degrees multiples. In other words time zones are separated by multiples of 1 hour or 1/2 hour.

    0
    2021-08-30T20:47:46+00:00

    Answer:

    Because 15 degrees of longitude is equivalent to 1 hour in time (that is 360 / 24) it is convenient to adopt time zones at 7.5 degrees or 15 degrees multiples. In other words time zones are separated by multiples of 1 hour or 1/2 hour.

    Explanation:

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