3 ms·
If you extend Gregorian calendar before 1582, I think it's reasonable to interpret numerical year number as 1 => AD 1, 0 => 1 BC, -1 => 2 BC (that would be prol
by garaetjjte 2y ago
If you extend Gregorian calendar before 1582, I think it's reasonable to interpret numerical year number as 1 => AD 1, 0 => 1 BC, -1 => 2 BC (that would be proleptic Gregorian calendar with astronomical year numbering?)