EDIT: I have discovered that rotating your character in the same direction is additive.

I expect the values to be in the range of 180 through -179.99

and not values like 520 and 720+

In F3 Debug I am facing 0.0 South and F3+C gives me  -359.98

/execute in minecraft:overworld run tp @s 2815.62 63.06 -1282.69 -359.98 20.55

-180 North gives me -539.98

/execute in minecraft:overworld run tp @s -423513.50 70.00 -698988.50 -539.98 19.95

-180 North at this location gives -179.98

/execute in minecraft:overworld run tp @s 582568.50 74.00 -33663.50 -179.98 19.95