This is an important day in the Earth-Sun dance! On this day, the Earth and Sun are "lined up" in a particular way - a line between the center of the Earth and the center of the Sun passes through the Equator at 14:16 EST.
Here are some links where you can find more information about Earth Day, the Equinox, and the Sun-Earth day :
- Earth Sun Day - Main page
- The Solar and Heliospheric Observatory
- SOHO - Sun 101 - Our Star, the Sun
- Trace Main Page
- New Views of the Sun - big PDF file
- Misconceptions about the Sun-Earth Connection
- Earth Day 2002 - Spring Equinox, March 20, 2:16 PM EST (earthsite.org)
- Vernal Equinox -- from Eric Weisstein's World of Astronomy
- Egg -- from Eric Weisstein's World of Astronomy
- US Naval Observatory - Earth's Seasons, etc. 1992-2005
- US Naval Observatory - main page
- US Naval Observatory - Length of Day/Night during Equinoxes
- US Naval Observatory - FAQ pages
- The official U.S. time - clock
- Kiddies - Make your own paper sundial!