equation of time

American  

noun

Astronomy.

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

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equation of time British  

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)

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Etymology

Origin of equation of time

First recorded in 1720–30

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Example Sentences

See Examples For:

equation of time

But the boring dystopia meme reminds us the end could arrive quietly but corrosively, with a total erosion of work-life balance, crowdfunding for necessary healthcare, infantilisation by technology and the equation of time with capital.

From The Guardian ● Aug. 6, 2018

This difference between GMT and solar time is called "the equation of time" by astronomers.

From BBC ● Dec. 20, 2014

It differs from apparent noon by the amount of the equation of time for that date.

From The Sailor's Word-Book An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc. by Sir Edward Belcher

When the time by the sun-dial is known, the equation of time will at once enable us to obtain the corresponding clock-time, or vice versa.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" by Various

Clock-time is called mean time, that marked by the sun-dial is called apparent time, and the difference between them is the equation of time.

From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" by Various

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