from typing import List
import calendar


def get_days_of_week(first_day: int = calendar.MONDAY) -> List[str]:
    """Returns a list of ordered days, starting with the specified day."""
    calendar.setfirstweekday(first_day)
    return (list(calendar.day_name[calendar.firstweekday():])
            + list(calendar.day_name[0:calendar.firstweekday()]))