Calender time format

I have a calendar. When I click a day there is a pop up with a form to input from-to dates and save the event.
The date picker I have set to use format 17:26 (not PM/AM).
I save to a table with a date field.

When my calendar gets the event the first text is the time, but displayed in pm/am and not as 24 hours. how do I change that?

(here just in the editor but it is the same in preview)

Supplement
In the preview it looks like this

This topic was automatically closed after 70 days. New replies are no longer allowed.