New decade?

[BENT_8]

From a mathematic standpoint then those who consider this the last year of the 2nd decade of this century, then yes, its correct, but we don't count decades by mathematical reasoning, it is simply the decade of whatever the first number is and so the noughties started on 1/1/2000, the 10's on 1/1/2010 and the 20's on 1/1/2020.
Whilst it would make mathematical sense to consider 2030 a year of the 20's, it would sound ridiculous.