Is there a Correct way to mathematically allocate GPS/location of Azimuth Degrees ?

EG: In the Southern Hemisphere, if North is 0 degrees, for say Sydney is direct East 90 or -90 degrees ? Then what is direct West -90 degrees or 270 degrees for southern hemisphere ?

Assuming the degrees go from North=0, and goes Clockwise to 360 degrees?

And is Northern Hemisphere the opposite ?

As I am unsure how these are correctly used for following the Sun position through the sky, in mathematical terms!

  • 1
    $\begingroup$ Yes, it always goes clockwise. It's usually measured from the north, but not always. See en.wikipedia.org/wiki/Azimuth $\endgroup$
    – PM 2Ring
    Aug 26, 2021 at 4:59
  • $\begingroup$ What do you mean by "mathematically allocate GPS/location of Azimuth Degrees"? $\endgroup$
    – PM 2Ring
    Aug 26, 2021 at 5:00

1 Answer 1


Conventionally, 0 is North, 90 is East, 180 is South and 270 is West; in both the Northern and Southern Hemisphere. These are directions.

This is nothing to do with GPS, which is about location, not direction.

  • $\begingroup$ Thanks, that is the type of information I am looking for. As I am trying to Track the Sun from Sunrise to Sunset, and the de-bug Manual for dual axis tracking is very confusing as it a Chinese version of how to do this. However the Manual uses statements like -90 degrees. $\endgroup$
    – The Raptor
    Aug 27, 2021 at 21:50
  • $\begingroup$ -90 = 270 degrees $\endgroup$
    – James K
    Aug 27, 2021 at 22:49
  • $\begingroup$ So, that must indicate the Software Only relates to working Backwards & Forwards from North position, where obviously North is 0 degrees ! $\endgroup$
    – The Raptor
    Aug 28, 2021 at 23:36

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