Pounder
Phaethon was here
People do refer back to the 20's or 30's, which would include (example) 1920-1929 or 1930-1939. A decade of course is any 10 years, a century any 100 years (could be 1812-1911).
But technically if you are counting years starting with the first decade, it would end at the end of year 10 and the next would be at the end of year 20, ad infintitum.
But technically if you are counting years starting with the first decade, it would end at the end of year 10 and the next would be at the end of year 20, ad infintitum.