The opening hours are defined during the initial account setup. However, you can change them at any time later on.
How to change the opening hours - step by step:
- Click settings in the left sidebar:

- Click the opening hours button:

- If your business operates on a given day, make sure the option Open is selected. Otherwise clear the check box:

- From the drop down menus from and to, select the opening hours. If your business doesn't open or close on the hour (9:00, 10:00 etc), you can enter a specific time. In order to do that, click the drop down menu, select click Other and type in the exact time:

Click the save button.