Entries in a calendar view show as AM. When I view the detail screen, they show as PM. When I go to Edit, they are AM. When I changed to PM and save, for a moment they stay as PM, but once Glide applies the correct time format, they switch back to AM.
Here’s a video showing it happening (it might need to process before you can watch it)
I think the problem here is that Glide can’t read the time format you set in your spreadsheet. Could you maybe just try removing the colon between the time and AM/PM?
I think the time is displayed based on your local country locale. I changed my browser from English (US) to English (UK) and the formatting of the date in the calendar changes based on my browsers locale.