Join Date: Sep 2004
Location: (not Montana. Nor is my name really Helena, nor am I female)
Programs: Delta, USAirways, Starwood, Priority Club, Marriott, Amex
Posts: 2,557
I always consider the sun angle, but it's not just so simple as sitting on the opposite side. If the sun will be generally behind me, I'm happy to sit on the sunny side. I don't live near a hub airport, so most of my flights involve two legs in and two legs out. So I'll also try to sit on one side on the first leg and the opposite side on the second leg, so my neck doesn't tire from being turned the same direction on both flights (especially important when both legs are on a CRJ).
But I also always book an A seat for overnight flights from the U.S. to Europe, just on the chance that the Aurora Borealis might be visible (only seen it once, though). Before going to sleep I ask the FA to wake me if it appears.