English

Noun

equation of time ‎(plural equations of time)

1. The discrepancy between two kinds of solar time: the apparent solar time, which directly tracks the motion of the Sun, and mean solar time, which tracks a theoretical "mean" Sun with noons 24 hours apart.
   • 2005, Caroline Childers, Grand Complications: High Quality Watchmaking (page 317)

     Crafted in 18-karat white gold, this Jules Audemars Equation of Time offers hours and minutes, as well as date, days, months, leap years and moonphases. The watch also offers sunrise and sunset times, and equation of time.

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