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Summary Of: Equation of time

The equation of time is the east or west component of the... The equation of time was used historically to set clocks... by the number of minutes given by the equation of time for that date... The equation of time values for each day of the year... the equation of time as defined by Ptolemy remained a curiosity... The first accurate tables for the equation of time were published in 1665 by... the equation of time was mean minus apparent solar time in the British... requiring all differences in the equation of time to have the opposite sign... Since the equation of time has a range of about 30 minutes... The exact shape of the equation of time curve and the associated... leaving the equation of time curve with only one maximum and minimum per year... and the resulting equation of time curve was symmetrical... the equation of time is equal to... the equation of time resembles the sum of two offset sine curves... the equation of time can vary by as much as 20 seconds... giving the Equation of Time and the declination of the sun for every day of the year... The Equation of Time and the Analemma... Equation of Time Longcase Clock by John Topping C...

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The Equation of Time - above the axis the dial will appear fast, and below the dial will appear slow. | | sundial | clock | min | s | November 3 | February 12 | Sun | obliquity | Earth | eccentricity | orbit | analemma | meridian | observatories | almanacs | ephemerides | planets | Mars | Ptolemy | Almagest | solar time | Apparent solar time | Christiaan Huygens | John Flamsteed | Greenwich Observatory | Nautical Almanac and Astronomical Ephemeris | marine chronometers | summer time | culminate | Kepler's laws of planetary motion | perihelion | 3 January | aphelion | Sun and planets at solar midday (Ecliptic in red, Sun and Mercury in yellow, Venus in white, Mars in red, Jupiter in yellow with red spot, Saturn in white with rings). | | celestial equator | ecliptic | celestial sphere | celestial equator | celestial equator | right ascension | declination | right ascension | sundial | equinoxes | solstices | equinoxes | solstices | precession | epoch | analemma | precession | Gregorian calendar | 21 March | 22 December | gnomon | conic section | dubious | discuss | right ascension | mean anomaly | periapsis | vernal equinox | spherical trigonometry | true anomaly | declination | obliquity | degrees | radians | January 1 | January 2 | The equation of time | Earth's Analemma | ISBN 0-943396-51-4 | Royal Greenwich Observatory | Audemars Piguet | horology | 1866 | ISBN 0780800087 | 1794 | 1665 | 1672 | v | d | standards | Time | Chronometry | Orders of magnitude | Units of time | Metrology | | Portal:Time | Time Portal | UTC | UT | TAI | ISO 31-1 | Second | DUT1 | Leap second | IERS | Terrestrial Time | Geocentric Coordinate Time | Barycentric Coordinate Time | Civil time | Minute | Hour | 12-hour clock | 24-hour clock | ISO 8601 | International Date Line | Solar time | Time zone | Daylight saving time | Time offset | Ephemeris time | Barycentric Dynamical Time | Greenwich Mean Time | Prime Meridian | Time in physics | Spacetime | Chronon | Cosmological decade | Planck epoch | Planck time | T-symmetry | Theory of relativity | Time dilation | Gravitational time dilation | Coordinate time | Proper time | Time domain | Continuous time | Discrete time | Absolute time and space | Horology | Clock | Astrarium | Atomic clock | Hourglass | Marine chronometer | Radio clock | Sundial | Watch | Water clock | History of timekeeping devices | Complication | Calendar | Day | Week | Month | Year | Decade | Century | Millennium | Astronomical | Julian | Gregorian | Islamic | Lunisolar | Solar | Lunar | Epact | Intercalation | Leap year | Tropical year | Equinox | Solstice | Days of the week | Calculating the day of the week | Dominical letter | International Commission on Stratigraphy | Geologic Time | Archaeological dating | Astronomical chronology | Nuclear time scale | Precession | Sidereal time | Galactic year | Fortnight | Jiffy | Lustrum | Saeculum | Shake | Tide | Chronology | Duration | System time | Metric time | Mental chronometry | Time value of money | Timekeeper | Categories | Celestial mechanics | Timekeeping | Time in astronomy | Earth phenomena | All pages needing cleanup | Articles with disputed statements |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Equation of time".