Equation of time
![[[Martin Braun Notos]]\\ with indication of the\\ [[equation of time]] (click to enlarge!)](/lib/exe/fetch.php?tok=b4ae2f&media=https%3A%2F%2Fwww.uhren-wiki.com%2Fimages%2FMartin_Braun_Notos_W_RGC_RG.jpg "[[Martin Braun Notos]]\\ with indication of the\\ [[equation of time]] (click to enlarge!)")
Martin Braun Notos
with indication of the
equation of time
© Martin Braun
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.