Compare Sun’s Zenith to Sunrise and Sunset

23 Jul , 2014  

Purpose or Problem

The purpose is to determine if the Sun’s highest altitude in the sky during the day is at the time exactly halfway between sunrise and sunset.



The Sun illuminates half of the Earth all the time. But the length of daylight is not half of a day (12 hours) every day. In fact, the length of daylight changes daily and varies at different locations on the Earth. More…