Excel VBA isolate Unique dates when you have time with it

I am looking to create an array or range of unique dates from a column of dates that have time associated with it. For example

1/3/1984 0:15
1/3/1984 0:20
1/4/1984 0:25
1/4/1984 0:30
1/6/1984 0:35
1/6/1984 0:40

The range would return

 1/3/1984
 1/4/1984
 1/6/1984 

Thanks for any help!