Wednesday 21 February 2018

New decade has not yet begun

Breda Heffernan welcomes a child born shortly after midnight on January 1, 2010 as "the first baby of the decade" (Irish Independent, January 2).

I hope no one will be unduly disappointed, but that is not true.

The final year of the pre-Christian era, 1 BC, was immediately followed by 1 AD, and thus the first decade of the new era was 1 AD to 10 AD inclusive, the second 11 to 20, and so on.

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