I know that the seasons were indicators but how did they know precisely to the day how much a year was.
Edit: Copying from a response I made:
“Thanks for the response!
But I still have a doubt cause most of the reponses are to measure it in certain way and wait until the sun goes back to its initial position, and I get how measuring its easy by doing it over a long period of time but the difference between 2 days seems kind of difficult to notice, like when the sun got back to its position and people were like “yeah it looks about the same as how it started” and then they observed the next day and it looked exactly the same, how did they decide a specific day.
I guess my question is more about how they achieved such precission rather than the method”
In: Earth Science
They would count the days. They would have something that would help them tell the changes in the sun’s position over time. They counted the number of days it took to for the sun to return to the same position.
https://www.wolfram.com/language/gallery/plot-the-yearly-path-of-the-sun/
Here is an example, they would count the number of days It took for the sun to reach the maximum or the minimum and back again
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