How far back in history do you have to go before the days of the week (monday, tuesday, etc) no longer line up... in other words, how long have we been consistently keeping track of days of the week as a society before it breaks down...

@freemo Somewhere sometime Roman time?

@freemo Oh gods, a 7-day week goes back even further than that. It corresponds with the phases of the moon. Full, waning half, new, waxing half. Though it'd not be perfect as it's not exactly 28 days, so some days got added sometimes in the final week. So the concept dates back to like 21st century BC apparently.

Look what you made me do.. I had to look it up and learn something!

@trinsec im not just talking about a 7 day week in general... but rather how far back sunday is sunday... like if you go back 2000 years was sunday really on a tuesday or some shit.

Of course im assuming the name changes with language a bit, so im talking about whatever name they called it that translates to tuesday.