This package enhances the CompoundPeriod type defined within Dates (Dates.CompoundPeriod). A CompoundPeriod is formed by attaching (adding) two or more distinct Periods:

julia> using Dates

julia> typeof( Year(1999) ), typeof( Hour(15) )
Year, Hour

julia> typeof( Year(1999) + Hour(15) )
Dates.CompoundPeriod

Note that typeof( compound_period ) is shown as CompoundPeriod rather than Dates.CompoundPeriod. This lets you know that enhanced CompoundPeriods are in use.

julia> using CompoundPeriods, Dates

julia> typeof( Year(1999) + Hour(15) )
CompoundPeriod