SimpleDuration
Translate times between each other easier for cleaner code. I.e. Duration.fromMinutes(number).toSeconds(); and for just representing a duration.
This should not be used with real Dates. Not every day has 24 hours for example, time is weird. This is just a simple abstraction. If you want real time adding on Dates, use Luxon.
Can be used for simple conversions, I recommend going from bigger to smaller or you might have floating point errors i.e. Duration.fromDays(number).toSeconds();
I also recommend checking isForever for unique cases.