
Quantity
    Number	a number with no scale
    Bytecount	a number of bytes
    Currency	a number of dollars (or other currency units)
    Currencies	a collection of currency values
    Date	a diurnal period in the history/future of the Earth
    Time	a number of seconds since midnight - time within a 24:00 clock
    Moment	a date or a date and a time
    Period	a range of moments
    Duration	a number of seconds (or minutes, hours, days, months, years)
    Weekday
    OrdinalWeekdayOfMonth
    DayOfMonth
    MonthOfYear
    DayMonthOfYear
    Year
   
    
