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Equation of time

The equation of time describes the discrepancy between two kinds of solar time. The two times that differ are the apparent solar time, which directly tracks the diurnal motion of the Sun, and mean solar time, which tracks a theoretical mean Sun with uniform motion along the celestial equator.

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Equation of time

Nodes111
Edges110
Triples139
Avg. degree1.98
Density0.018018
Components1

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Equation of time

Top relations

related to External links · 20
Equation of time → Analemma, AnalemmaDoing, Archived, Brian Tung, Calculate, Dierum The Equation, Equation, Extensive, Includes, John Topping, Kieron TaylorAn, May, NOAA Solar Calculator, Ptolemy's, Royal Greenwich Observatory, Sun, The, Time, Time Longcase Clock, USNO
related to Early modern period · 19
Equation of time → Apparent Time, Clocks, He, Land, Later, Many, Meridian, Nautical Almanac, Nevil Maskelyne, Observation, Rising, Setting, Some, Sun, The, This Time, Time, Watches, When
related to Concept · 17
Equation of time → Apparent, April, As, Computer Almanac, December, During, Earth's, February, However, Ignoring, June, Naval Observatory's Multiyear Interactive, November, September, Sun, The, UT1
related to Notation · 12
Equation of time → Anyone, English-speaking, Equation, NYSS, Observatory, Often, Otherwise, Publications, Some, The, The United States Naval, Time
related to 18th and early 19th centuries · 11
Equation of time → But, Earth's, Flamsteed's, General, Jupiter, Moon, See, Slow, Sun, The, Venus
related to Early astronomy · 11
Equation of time → Babylonians, Book III, Handy Tables, He, However, Moon, Ptolemy, Ptolemy's Almagest, Sun, Sun's, The
related to Final calculation · 10
Equation of time → For, Here, Higher, January, Milne, The, This, Using, UT1, When
related to Practical use · 9
Equation of time → At, By, If, Machines, Sun's, The, This, Unfortunately, With
related to history · 8
Equation of time → Gerald, Johannes Kepler's, Latin, Mean, Middle English, Ptolemy's, The, Toomer
related to Calculation · 7
Equation of time → Earth, For, In, It, Its, Sun, The

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Important terminology

time equation mean sun year solar apparent one two value values difference day days eot motion number earth's orbit sundial

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Equation of timeis aeast or west component of the analemma0.90text
Equation of timeis adifference apparent solar time minus mean solar time0.90text
solar trackersinstance ofMachines0.80text
heliostats have to move in ways that are influenced by the equation of time.Civil time is the local mean time for a meridian that often passes near the center of the time zoneinstance ofMachines0.80text
and may possibly be further altered by daylight saving timeinstance ofMachines0.80text
computer-controlled heliostats the computer is often programmed to calculate the equation of timeinstance ofIn devices0.80text
Equation of timerelated to 18th and early 19th centuriesThe0.60section
Equation of timerelated to 18th and early 19th centuriesFlamsteed's0.60section
Equation of timerelated to 18th and early 19th centuriesBut0.60section
Equation of timerelated to 18th and early 19th centuriesGeneral0.60section
Equation of timerelated to 18th and early 19th centuriesSlow0.60section
Equation of timerelated to 18th and early 19th centuriesEarth's0.60section

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