A weekday
See also Efl.Ui.Calendar.first_day_of_week.set.
enum Efl.Ui.Calendar_Weekday { sunday: 0, monday, tuesday, wednesday, thursday, friday, saturday, last }
typedef enum { EFL_UI_CALENDAR_WEEKDAY_SUNDAY = 0, EFL_UI_CALENDAR_WEEKDAY_MONDAY, EFL_UI_CALENDAR_WEEKDAY_TUESDAY, EFL_UI_CALENDAR_WEEKDAY_WEDNESDAY, EFL_UI_CALENDAR_WEEKDAY_THURSDAY, EFL_UI_CALENDAR_WEEKDAY_FRIDAY, EFL_UI_CALENDAR_WEEKDAY_SATURDAY, EFL_UI_CALENDAR_WEEKDAY_LAST } Efl_Ui_Calendar_Weekday;