You can set any day of week as the first day of week.
The scheduler supports 12 and 24 hour clock.
You can use localized date and time format in the scheduler.
All labels and built-in texts can be adjusted.
The scheduler supports 34 locales out of the box:
You can define your own locale if needed.
Setting a locale:
var dp = new DayPilot.Scheduler("dp"); dp.locale = "de-de"; dp.init();
Read more about localization [doc.daypilot.org].