How to calculate length of day and length of visible light?

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We have sunrise and sunset info from astronomy api. Are those actual sunrise / sunset or civil sunrise/sunset data? Also How to calculate these two terms from the api?

Length Of Day:
This is defined to be the time of Actual Sunset minus the time of Actual Sunrise. The change in length of daylight between today and tomorrow is also listed when available.

Length Of Visible Light:
This is defined to be the time of Civil Sunset minus the time of Civil Sunrise.
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Saurabh Kardile

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Posted 2 years ago

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