In both hemisphere the latitudes are calculated by_ in daytime
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This article is about duration of sunlight in a day. For the rotation of the Earth around its own axis, see Earth's rotation § Rotation period. For the length of a mean solar day compared to a uniform time scale, see ΔT.
For other uses, see Daytime (disambiguation).
"Length of day" redirects here. It is not to be confused with Day length fluctuations.
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A daytime sky with white clouds

Daytime image of the bay of Sorrento
On Earth, daytime is roughly the period of the dayduring which any given point in the world experiences natural illumination from especially direct sunlight. Daytime occurs when the Sun appears above the local horizon, that is, anywhere on the globe's hemisphere facing the Sun. In direct sunlight the movement of the sun can be recorded and observed using a sundial that casts a shadow that slowly moves during the day. During daytime, an observer sees indirect sunlight while in the shade, which includes cloud cover. 'Day' is sometimes used instead of 'daytime', in this case 'day' will mean 'the period of light between dawn and nightfall; the interval from sunrise to sunset', which is synonymous with daytime.[1] However, in this context, in order to be clear "daytime" should be used distinguish it from "day" which typically refers to a 24-hour period.[2]
Other planets and natural satellites that rotate relative to a luminous primary body, such as a local star, also experience daytime of some sort, but this article primarily discusses daytime on Earth
Answer:
in both hemisphere the latitude are calculated by _ in daytime ANSWER is 24 hours