I have a list of datetime and i want to find max and min date and corresponding column value

I have a list of datetimes in a datatable as below

column A column B
01/02/2019 09:23 Val1
01/02/2019 10:33 Val2
01/02/2019 11:23 Val3
01/03/2019 08:21 Val4
01/03/2019 11:24 Val5
01/03/2019 20:19 Val6

I need the resulting datatable as

01/02/2019 09:23 Val1
01/02/2019 11:23 Val3
01/03/2019 08:21 Val4
01/03/2019 20:19 Val6

In short i need to find max and min for unique dates in a list and its corresponding column data.

Any leads would be helpful.