How can I count data by group in excel

Question

I have data of program usage in excel file, the data has date and time. I want to summarize this information that in each day each hour, how many user use this application. How to do that using excel formular?

sample data:

Jun 01, 09:03AM
Jun 01, 10:00AM
Jun 01, 10:50AM
Jun 01, 11:00AM
Jun 01, 11:26AM
Jun 02, 01:00PM
Jun 02, 03:00PM
Jun 02, 04:04PM
Jun 02, 08:00PM
Jun 02, 11:00AM
Jun 02, 12:00PM
Jun 01, 10:50AM
Jun 01, 11:00AM
Jun 02, 11:00AM
Jun 02, 12:00PM
Jun 02, 01:00PM
Jun 03, 08:00PM
Jun 03, 09:00PM