Formatting the date in Kate's print header

[chimak111]

In How to alter date format in page header in Kate (kde text editor) a user of Kate wants to have a specific format, YYYY-MM-DD HH:mm, apparently without success.

This is what the user tried:

%y => 1/19/19
%Y => Saturday, January 19, 2019
%t => %t
%T => %T
%i => %i
%I => %I
%d => 1/19/19 4:59 PM
%D => Saturday, January 19, 2019 4:49:58 PM CET

[jlittle]

Kate is using the System Settings, Regional Settings, Formats. I have "Detailed settings" checked, and "Time" set to "United Kingdom - British English (en_GB)", and kate just printed "22/03/2019 10:26" for %d.

[chimak111]

Thanks! Will you post an answer there?

[jlittle]

Thanks! Will you post an answer there?

(Been away.) Someone else has commented there suggesting the Swedish settings. The questioner's requirement is for an ISO format date, not the dd/mm/yyyy I suggested.

[chimak111]

In a later comment to the question, there's a link to an image of Geany's header the way OP wants:

https://i.stack.imgur.com/mgZOc.png

But unlike Kate's header, the Geany header takes up two lines and the order in the Geany header seems fixed. Win some, lose some!