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

### This page exists due to the efforts of the following people:

#### Michele

Created: 2012-03-29 18:52:42, Last updated: 2020-11-09 16:14:49

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

$L=h/tan({\alpha})$,

where

h - object height,
a - the angle between Sun and horizon.

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

:
°
°
Digits after the decimal point: 2

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

:
:
°
°
Digits after the decimal point: 2