This is all well and good, but you are not actually correct.
A decade is simply a measure of 10 years. It can start from any time. 10 years measure starting from June 19th 1876 is just as much a decade as any other span of 10 years. If you were to say "the 20th century" that would be the 20th century AD, so a measure of 100 years starting from January 1, 1901 and ending on December 31, 2000. If you were to say "the 1900s" that would be a century starting on January 1, 1900, and ending on December 31, 1999. These are two distinct things, different from each other, but both equally centuries. With decades, we do not talk about the 200th decade, no on says that, they say "the 1990s", which would be a decade starting on January 1, 1990, and ending on December 31, 1999.
So there being no year 0 doesn't actually change anything, since we don't measure decades the same way we do centuries.
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u/thiosk Dec 13 '19
correct~ there was no year zero.
decade 1 = 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (10 yrs)
best decade: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000
this decade: 😀😀😀😀, 😃😃😃😃, 😄😄😄😄 😁😁😁😁 🤣🤣🤣🤣, 😨😨😨😨, 😬😬😬😬, 😟😟😟😟, 🥵🥵🥵🥵<---- you are here 🤢🤢🤢🤢