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Equation of time

The equation of time is the difference between time as read from a sundial and time as read from a clock or watch (also called solar time).

Due to the elliptical orbit of the earth the two times only match on April 15, June 14, September 1 and Dec 24th. On all other days, the deviation reaches from minus 16 minutes 23 seconds (4 November) to plus 14 minutes 22 seconds (on February 11).

A manufacturer who specializes particularly in wristwatches with equation of time display is Martin Braun. His model Notos also offers the additional complication of the display of the declination.

See Also

equation_of_time.txt · Last modified: 24.12.2023 15:16 by gerdlothar

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