There is an old rule of thumb that the clubhouse is best set at the noon position on the site, and gets worse as you go around the clock. In reality, anywhere from noon to six or maybe even 7-8 is pretty good.
Sometimes (especially on multi course sites like Pinehurst) the clubhouse is set by someone else, or general situation, a la, the only good road comes in from the NW. And, if the clubhouse is on the western edge to NW corner of the site, 1 and 18 running into the sun is very likely.
I once lost a pretty important commission on this issue by pointing out that simple fact when the Owner, for reasons of their own, preferred the NW corner. Lost another by proposing a mile road across the site to get a more favorable sun position. Obviously, most budgets, done generically before design, don't include excessive budgets for entry, etc. You may note Ross did several clubhouses in the corners. I am pretty sure that was a combo of Scottish frugality and most logical entry point from all POV other than sun orientation while playing golf.
And the setting sun is an issue all times of year, just for slightly different hole orientations. At some point in the day, the sun gets low in the sky, and if a hole runs right into it, it will have problems. In summer, that is actually the NW orientation, and with the lower sun angle in winter, more west and even southwest. So considering sun angles might be a little different on an AZ or similar winter venue than somewhere in MN, for example.
I think I once posted about the importance of sun angles, and if memory serves, was roundly accused of following too many design rules. Ah, yeah. As with most design rules, there is a reason that they came to be rules after about 500 years experience.