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Dictionary of Astrological and Astronomical Terms

Compiled by Julene Packer-Louis, Evan Bortnick, and Jackie Goldstein

Copyright 2000-2019 OCA, Inc. All rights reserved. No portion of the dictionary may be reproduced in any form without written permission.

 

Sidereal Time

The measurement of the hour of the angle 00 Aries is from the Sigma Point. Sidereal time begins at 00 Libra where three Great Circles intersect in the west: Ecliptic, Celestial Equator, and Meridian. The tropical zodiac begins when these three circles intersect in the east.

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