Astronomical Cycles
Elementary observations are made below.
The earth has an orbit around the sun that takes place in 365 days 5 hours, 48 minutes and 46 seconds, (revolution).
The time when the earth turns the revolution can be considered constant, that is, the period of current revolution is the same as 10,000 years ago.
As mentioned earlier a year is not a made with integers number of days and to remedy this every 4 years we add one day so that we can deny the excess time.
The day added to our calendar is February 29th.
The solutions are very similar to those adopted by us and it is well known that our calendar is very similar to the Egyptian one
To have ”always” repeat the same solar height at a certain point you will have to wait 4 years from the first measure so as not to incur these small errors.