Nah, I would say the sun is either at 11:30, or 12:30. depending on which way the sun is moving, left to right or right to left.
I think they are under the tractor, as their shadow is not visible. If they were on the other side of the tractor, their shadow would be visible. If only two people were in the sun, you would only see two shadows.
The sun is not shinning on the4 guys at all, and their clothes are dull looking, compared to the man standing. His shadow is showing.
If they were sitting in the shade on the other side of the tractor, there would be sun under the tractor.