hie can you please help me on how to calculate the operating hours for the following in excel spreadsheet

Opening hours:
Monday : 10 am to 10 pm
Tuesday: 10 am to 10 pm
Wednesday: 10 am to 10 pm
Thursday: 10 am to 11 pm
Friday: 10 am to 12 pm
Saturday: 10 am to 11 pm
Sunday:10am to 10 pm