Am currently constructing a timeline for my room that my mum will deffos take down BUT IDK WHAT YEAR THING TL CORRELATE IT WITH !?!?

Do I do lunar and give myself a world of pain to correctly work out dates or make it easier and just go gregorian.
BUT I LOWKEY LIKE THE SOUND OF JULIAN

Do you ever think about the fact that you wanna include BC and DC 3vents and you have no understanding of time whatsoever pls vote xx
Me :how to include dinosaurs