The opening hours displayed on your club information page are not necessarily the same as the actual bookable hours in your schedule.
Changing the visible opening hours on your club information page
This only affects how the hours are displayed to players on the club information page:
Go to Settings → The club → See Opening Hours
Changing the bookable hours in your schedule (just one or a few days)
To change your opening or closing time just for one or several random days, the simplest method is to create an "Unavailable" booking during those hours in your schedule. Highlight the times and courts you want to close → Select Unavailable → Write a note if needed → Save.
Changing the bookable hours in your schedule (long term)
The hours available for booking in your schedule are determined by your club’s price list. Any court time slot that has a price set in the price list is considered bookable.
To change your bookable hours, navigate to Settings → Price list → Standard price list → Select price list → Click the three dots (…) next to your price variant → Adjust the hours available within that price variant.