Actually you are right. It does make sense, I just always interpreted decade as a different abstraction.
2019 could be the end of "my decade" only if there was a year zero, which does not exist in gregorian calendar. The second millenium ended in year 2000, so the 202 decade ends in 2020.
2019 could be the end of "my decade" only if there was a year zero, which does not exist in gregorian calendar. The second millenium ended in year 2000, so the 202 decade ends in 2020.