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