Seasons in the Northern Hemisphere - Summer
begins on the summer solstice (21 June)
longest day of the year in NH
24 hrs of sunlight north of arctic circle
more than 12 hours of daylight in NH
sun angle is 90° at Tropic of Cancer
ends on the Autumnal equinox (September 22)
images adopted from The Atmosphere by F.K. Lutgens and E.J. Tarbuck, ©1998 by Prentice-Hall, Inc