Originally Posted by
Porcepic
Is it normal the wiki states April 2020?.
April 2020 is taken only as an example. It is one of 12 possible year-end deadlines, all of which are included and treated in exactly the same way.
(You can substitute March 2020, May/June/July/August/September/October/November/December 2020 or January/February 2021 in its place and the example still holds good.