Path of Sun
Hours of daylight increase from winter to summer pole
Equator always has 12 hours of daylight
Summer pole has
24 hours of daylight
Winter pole has 24 hours of darkness
Equator always has 12 hours of daylight
Summer pole has
24 hours of daylightWinter pole has
24 hours of darknessNote different Zeniths
Danielson
et al., p75