equation of time

noun Astronomy.
  1. apparent time minus mean solar time, ranging from minus 14 minutes in February to over 16 minutes in November.

Origin of equation of time

First recorded in 1720–30
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British Dictionary definitions for equation of time

equation of time

noun
  1. the difference between apparent solar time and mean solar time, being at a maximum in February (over 14 minutes) and November (over 16 minutes)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012