用英文寫日期什麼時候用st,nd, rd? 下面日期這樣寫對不對呢? 11st June,2016/ 12nd June,2016/ 13rd June,2016 21st June,2016 /22nd June/ 23rd June?

下面日期這樣寫對不對呢?

11st June,2016 (X)
11th June 2016 (O)
June 11, 2016 (O)
June 11th (O)
12nd June,2016 (X)
12th June 2016 (O)
June 12, 2016 (O)
June 12th (O)
13rd June,2016 (X)
13th June 2016 (O)
June 13, 2016 (O)
June 13th (O)
21st June,2016 (O)
22nd June (O)
23rd June (O)

用英文寫日期什麼時候用st, nd, rd?
When the number spelling ends with "one", then you may say first. Obviously, eleven does not end with one, does it?

Same rationales for 'two' and 'three';

1 -->first
11-->eleventh
21-->twenty-first
31--->thirty-first
1, 21, 31用st