I have a use-case where I want to show the headerDate in other format than the habitual one because of a design mockup.
I have found in Documentation > Localization > Header Date Format (https://doc.daypilot.org/calendar/header-date-format/) that I can make this without using a Resource Calendar. But as soon as I went to my code, that was a missing property from the DayPilot Angular Lite library.
I attach as files the different images. First one from documentation, the other from the classes of the library.