What is the easiest way to change the date format for the "authored by" field on a content type?

(Asking in hopes that there is an easier answer than a custom template).

Accepted answer

I just remembered that an option I've used in the past is to change the "Medium" date format and treat it as the default date format. This will work with the default Backdrop theme which uses this date format by default, but might not work in all cases. 

/admin/config/regional/date-time/formats/medium/edit

Thanks to @klonos for helping me find this module, which is probably a better solution, but at the cost of an additional contrib module. 

https://backdropcms.org/project/submitted_by

With the "submitted by" module you can insert a token into the submitted by line that includes PHP formatting = [current-date:custom:m/d/Y] OR you can include a custom date format that you have already created = [current-date:default] (Where default contains custom PHP formatting). This setting is configured on a per content type basis.

You can create a custom date format here: /admin/config/regional/date-time

I also found this issue in the BackdropCMS core issue queue. 
https://github.com/backdrop/backdrop-issues/issues/2379

Comments

I just remembered that an option I've used in the past is to change the "Medium" date format and treat it as the default date format. This will work with the default Backdrop theme which uses this date format by default, but might not work in all cases. 

/admin/config/regional/date-time/formats/medium/edit

Thanks to @klonos for helping me find this module, which is probably a better solution, but at the cost of an additional contrib module. 

https://backdropcms.org/project/submitted_by

With the "submitted by" module you can insert a token into the submitted by line that includes PHP formatting = [current-date:custom:m/d/Y] OR you can include a custom date format that you have already created = [current-date:default] (Where default contains custom PHP formatting). This setting is configured on a per content type basis.

You can create a custom date format here: /admin/config/regional/date-time

I also found this issue in the BackdropCMS core issue queue. 
https://github.com/backdrop/backdrop-issues/issues/2379