I am using a node and on their demo screen the times are shown in 24 hour format.
When I try, I get it in 12 hour format.
(Not against the reply)
I asked and got this back:
The time input field is a standard HTML control, it shows 24/12 hour clock based on your browser language.
A browser language English (United States) shows a 12 hour clock (therefore with AM/PM), while English (United Kingdom) shows the 24 hour clock.
So, I'm stuck/confused.
Just to also clarify, I have changed the browser language from United States to United Kingdom and it doesn't seem to make any difference.
OK, at least your question makes sense now. What you see is down to the browser, as for how a particular browser chooses to show times I don't know. I think you will find that the format in this node is the same as in the time picker node.