Vernal & Autumnal Equinox

Astronomy: K-12 TLC Guide. Calendars and Seasons: K-12 TLC Guide. Solstice: K-12 TLC Guide.

Autumnal Equinox, Vernal Equinox

The Vernal & Autumnal Equinox	Calendars: K-12 TLC Guide. Astronomical Time Keeping, The Munich Astro Archive. Canadian Broadcasting Corporation. Compute Local Apparent Sidereal Time, U.S. Navy. The Constellations, NASA. Cross-quarter Days, Earth and Sky. Day, Night not Equal on Equinox, USAToday. Earth and Sky: Everything You Need to Know. Equinox, Montana State University. Equinox and Solstice.com. Glossary of Astronomical Terms, Harvard University. The Royal Observatory, Greenwhich: Equinoxes and Solstices. The Zoroastrian Calendar, BBC.
The Equinox Autumnal Equinox	Earth and Sky. The Electronic Sky. National Public Radio: Auroras on Autumnal Equinox. Science World. University of Kansas.
The Equinox Vernal Equinox	Easter: K-12 TLC Guide. Eggs and the Vernal Equinox: Bad Astronomy. *Earth and Sky. An Eggs-Citing Equinox?, Current Skies Eric Weisstein's Treasure Trove of Astronomy. National Public Radio: Spring Equinox Brings Balance, At Least to Eggs. Eric Weisstein's Treasure Trove of Astronomy. Japan's Vernal Equinox Day, Crayola. Library of Congress. National Geographic: First Day of Spring: Myths, Facts, and Equinox Science. The Royal Observatory, Greenwhich: The Date of Easter. The Weather Notebook, Mount Washington Observatory: Origins of the Words "Vernal" and "Spring"*.

If you find links that are either unsuitable or no longer current, please contact the TLC.

This guide last edited 03/13/2012
This guide last revised 05/05/2008