You can change the date and time of your event in the event details.

It’s important to inform any date\time changed to registered attendees beforehand

In order to do so, go to “My Events”, select the three dots on the relevant event’s top right corner and choose “Edit Event”.

In order for your changes to be saved, choose “Discard event draft and edit event”, “Load event draft” will let you view your event draft, allowing you to view details without changing them.

Open event details, Set the desired date & time & scroll to the bottom and click “Save Changes”