In chalking up how illiterate you are about any of this, you also just revealed you somehow don't know about the existence of celestial almanacs:

which navigators use to tell where certain celestial bodies will be, when,

as they move through the sky overhead.

"So what do navigators need to find their position on the earth's surface by observing the stars?

1. They need an almanac prepared by astronomers, to forecast precisely where heavenly bodies,

such as the sun, moon, planets, and selected navigational stars, are going to be,

hour by hour, years into the future, relative to the observatory that prepared the celestial almanac: Greenwich, England in modern times."

https://www.mat.uc.pt/~helios/Mestre/Novemb00/H61iflan.htm

You literally have not been able to give ONE correct answer in here,

for nearly a WEEK.