Why do time quantities have to be integers?

Internals & Design
9

(with the understanding that I do not recommend this, you can experiment)

using Base.Dates

function Base.:(*)(x::AbstractFloat, p::Period)
    n = Nanosecond(p)
    y = x * n.value
    nanos = floor(Int64, y)
    micros, nanos = fldmod(nanos, 1000)
    millis, micros = fldmod(micros, 1000)
    secs, millis = fldmod(millis, 1000)
    mins, secs = fldmod(secs, 60)
    hrs, mins = fldmod(mins, 60)
    dys, hrs = fldmod(hrs, 24)
    result = Nanosecond(nanos) + Microsecond(micros) +
                 Millisecond(millis) + Second(secs) +
                 Minute(mins) + Hour(hrs) + Day(dys)
    return result
end

julia> 1.5 * Second(1)
1 second, 500 milliseconds

julia> sqrt(2) * Day(5)
7 days, 1 hour, 42 minutes, 20 seconds, 258 milliseconds, 945 microseconds, 177 nanoseconds
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