![](/file/16310/Redshift 3 (Maris Multimedia)(1998).ISO/media/astdict/e/graphics/equation.jpg)
Equation of time
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The difference between mean solar time, as shown on a uniformly running clock, and apparent solar time, as displayed on a sundial. It varies in a complicated way during the course of a year (see illustration), to a maximum of about 15 minutes.
See also: apparent solar time.
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