Shadow length# Shadow length

##### Gives a vertical object shadow length for given coordinates and time. Also calculates shadow growth during whole day.

This simple online calculator gives a vertical object shadow length for specified day and geographic coordinate. The calculator uses Sun position algorithm to calculate sun altitude.

Then it uses this formula to calculate shadow length:

,

where

The calcultor gives zero result if there is no shadow. As you know, this may happen at night time :).

You may also clculate the shadow growth during the whole day using the calculator below:

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