How long after sunset is darkness?

So How Long Does It Take to Get Dark after the Sunset? In short, it takes somewhere between 70 and 140 minutes for the Sun to go past 18º below the horizon and reach the night phase. However, closer to the equator, the timeframe would be around 23 minutes.

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Does sunset time mean dark?

Sunset, also known as sundown, is the daily disappearance of the Sun below the horizon due to Earth’s rotation. … The time of sunset is defined in astronomy as the moment when the upper limb of the Sun disappears below the horizon.