S2 Azimuth Angles: relative to the North?

The view and solar azimuth angles are in the metadata of S2 imagery. I’m trying to compute shadows using a DEM and the solar angles, and I want to know the position of the sun relative to the image. I think the azimuth angle is usually clockwise from the geographic north. However, the tilt of S2 imagery makes this slightly complicated.

See image below. It is projected in WGS84. If the solar azimuth angle is 180 degrees in the metadata, would be sun be in direction 1 or 2?

Thank you so much!

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