Solar noon IS exactly 12:00 noon, local apparent solar time. By definition, that is what noon is supposed to be. But we have added a lot of tweaks since back in the day. We adjust for local mean solar time. And again for longitude and finally arriving at our time zones standard time. And maybe toss in daylight savings just for fun. And we arrive at the modern clock time. Depending on location and date, clock time and local apparent solar time can be off by as much as 4 hours, give or take.
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Solar noon IS exactly 12:00 noon, local apparent solar time. By definition, that is what noon is supposed to be. But we have added a lot of tweaks since back in the day. We adjust for local mean solar time. And again for longitude and finally arriving at our time zones standard time. And maybe toss in daylight savings just for fun. And we arrive at the modern clock time. Depending on location and date, clock time and local apparent solar time can be off by as much as 4 hours, give or take.
Solar Noon Definition
In terms of LOCAL time, it is.
Before time zones were established in 1888 every town clock on Earth was set by the sun at zenith at noon.
Along latitude 40 north times of sun rise/sun set vary a minute per 13 miles east-west.
Because the planets orbit is elliptical and the planet rotates at a 23 degree angle.
if you can answer why do we have leap year instead of just 365 days in a year, then you will know the answer to your question