If a new or update event is not showing on a calendar then you may be viewing a cached version of the calendar. You may have to wait up to an hour for this cached version to be updated in your browser. This just means the calendar loaded in your browser is not displaying any new updates from our system until an hour has passed since it was first loaded. This does not mean the event updates are not being shown to others.
Caching is a standard practice employed by web services and websites to efficiently manage server loads.
If you visit the site after an hour, or load the calendar on a separate device that has not loaded the calendar in the past hour, then you will see the newest version of the calendar. We do have a fix prepared such that you will be given a refreshed cache if your browser posted a new event or made an update to an existing event. If your browser made the change then you will get an instant cache refresh so you can see what all new calendar viewers see.