Your first point is technically correct, but 24-hour days and 7-day weeks are a de facto global standard at this point in history. There are outliers, like the Javanese 5-day week or the experimental 5-day Soviet calendar, but they are few and far between.
Number of days in a week (or the existence of weeks at all) aren’t universal, though. And technically not even hours.
Only the length of the day, year and moon cycle are universal (or earthiversal).
Your first point is technically correct, but 24-hour days and 7-day weeks are a de facto global standard at this point in history. There are outliers, like the Javanese 5-day week or the experimental 5-day Soviet calendar, but they are few and far between.
kinda surprised someone in lemmy knows about the javanese calendar system a.k.a “weton” :O
Well now there are two plus me, and this is fantastic content for role playing