What would be the command to count how many times we saw certain line by hour or by minute?

File:

Nov 26 08:50:51
Nov 26 08:50:51
Nov 26 08:51:09
Nov 26 08:51:09
Nov 26 08:51:09
Nov 26 08:51:09
Nov 26 08:51:40

Output I would like to see:

by minute:

Nov 26 08:50    2
Nov 26 08:51    5

by hour:

Nov 26 08       7
linux unix awk
Edit
Report