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Shadow length

Shadow length

Gives a vertical object shadow length for given coordinates and time. Also calculates shadow growth during whole day.
Anton2012-03-29 18:52:42

This page exists due to effort of the following persons:

Sun altitude and shadow

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:

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

where

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

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

Shadow lengthCreative Commons Attribution/Share-Alike License 3.0 (Unported)
 :
°
°
0.12345678901234567890
 

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

Daily shadow growthCreative Commons Attribution/Share-Alike License 3.0 (Unported)
°
°
0.12345678901234567890
Shadow length :

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