Why the sun is in your eyes every September, and again in MarchThe sun rises due east only near the equinoxes, and that is when the morning commute stares into it. Sunrise bearing and glare minutes, month by month.Your commute has a glare season. Here are its dates.A fixed departure meets the sunrise twice a year, for a few weeks each time. Start and end dates for common departure times in three cities.How low your sun visor reaches, and why your car's height is beside the pointSeat height does not move the sun; windshield rake changes how far down the visor covers. The angles Glare assumes, and how to measure your own car.How we know where the sun is, and what we do not pretend to knowSun position from NOAA solar geometry, checked against an astronomical ephemeris to 0.1 degrees. What is modelled, what is assumed, what is left out.Why sunset drifts fast where you live, or barely at allHow many minutes sunset moves each day in September and June, from Quito to Anchorage, and why latitude decides the number.