>>Sorry, that's flat out wrong. The Gregorian Calendar begins at the year 1 AD, not 0. Therefore the 1st Century ran from 1-100, 2nd was 101-200, etc.
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>The obvious solution, of course, is to renumber the BC system to include a year 0 :) Being a mathematician, I've always disliked the idea of an integer continuum with no zero...

There's 1BC, 2BC... there's year 1, year 2... where's the zero? Did they ever find who stole the zero year?