Re:US Senate votes unanimously to make daylight savings time...
by adolph on Tuesday March 15, 2022 @03:36PM
(#30690317)
"Or closest" is a mildly significant caveat.
The real Sun and the imaginary “mean Sun,” from which mean solar time is measured, may be as much as 16 minutes apart because during the course of the year the apparent motion of the real Sun against the background of the stars (the ecliptic) alternately slows down and speeds up.
The east–west component [of the analemma] results from the nonuniform rate of change of the Sun's right ascension, governed by combined effects of Earth's axial tilt and orbital eccentricity.
The real Sun and the imaginary “mean Sun,” from which mean solar time is measured, may be as much as 16 minutes apart because during the course of the year the apparent motion of the real Sun against the background of the stars (the ecliptic) alternately slows down and speeds up.
https://www.britannica.com/science/solar-time
The east–west component [of the analemma] results from the nonuniform rate of change of the Sun's right ascension, governed by combined effects of Earth's axial tilt and orbital eccentricity.
https://en.wikipedia.org/wiki/Analemma