Our office block in Pretoria was in a street of contiguous shops etc. Consequently it was tall and narrow - with offices on the back and front - which were respectively East/West facing.
With sealed windows the temperature was maintained by air conditioning - cloudy days were rare. Unfortunately there was only one thermostat for our floor - and that was on the back of the building. So our office at the front had its temperature adjusted in inverse proportion to the sun shining through our windows. While the boss's back office had a constant pleasant environment - we either froze or fried depending on the time of day.