1BC-9AD is a decade
1BC-99AD is a century
1BC-999AD is a millennia
Remember time started before AD, if you’re grouping years in 10s, 100s, and 1,000s you don’t start from the middle you go all the way back to the start of existence and count in groups to where we are now.
Last edited by MGlitch; 01-05-2020 at 11:29 PM.
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