The Promise of the Equinox: A Personal Account

On about Dec. 21, the occasion of the winter solstice, the sun takes a brief respite on the tropic of Capricorn at 23 1/2 degrees south latitude. Then it begins its six-month odyssey north for a rendezvous with the tropic of Cancer at 23 1/2 degrees north latitude. Along the way, at a precise second in March, its rays are directly overhead on the equator, declaring the Spring Equinox. This year th...