Hila Sundial Hour Line Calculator
Created with VBscript by Wayne Campbell .
Angles are measured from the base line (6 - 6)
This diagram shows line layout only.
It is not accurate for any latitude.
The gnomon angle is the same as location's latitude.
Enter Latitude -
Hour Line Angle (degrees)
Enter longitude as decimal number.
6AM and 6PM lines always "0" degrees.
For latitudes south, invert hours on dial.