How to display calendar times in 12-hour format?

That should be set by your locale. Try switching locale?

Where is this happening? On the calendar, or the popup?

• This reply was modified 52 minutes ago by LBell.

It’s on the calendar. It used to show 12-hr until I added locale=”en-GB” to set the first day as Monday, that’s when it changed to 24-hr.

You can override the time format using the fc_args shortcode argument.

Something like: fc_args="{"timeFormat":"h(:mm)t"}" should do the trick.

https://fullcalendar.io/docs/v3/timeFormat