Comment Comment by oxidant Interesting question. From the Wikipedia article,> ISO 8601 allows Gregorian dates from the introduction of the calendar on 15 October 1582.https://en.wikipedia.org/wiki/ISO_8601#Dates parent oxidant 3 months ago
> ISO 8601 allows Gregorian dates from the introduction of the calendar on 15 October 1582.
https://en.wikipedia.org/wiki/ISO_8601#Dates