Azimuths run anticlockwise. North is 0.

Azimuths run clockwise. South is 0.

Solar Time
Hour Angle
Compass point
Equation of Time
Solar → Clock
Noon clock
Noon declination
Noon Equation of Time
Sunrise on clock
Sunrise Hour Angle
Sunrise azimuth
Sunrise compass point
Sunset on clock
Sunset Hour Angle
Sunset azimuth
Sunset compass point
Your latitude
Your longitude

Convert solar time to clock time by adding the increment shown (add negative is subtract).

Solar altitude, and rise and set times are adjusted for atmospheric refraction. Compass points are within ±11¼°.

Written by Steve Lelievre using calculations from Jean Meeus' Astronomical Algorithms and refraction formulae found on the NOAA website. For interest only, not to be relied on as correct.

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