They may have something that's just not as easy to work with as strings. E.g. in Swift, you have DateComponents, but that's too dynamic (and Date is sometimes r

They may have something that's just not as easy to work with as strings. E.g. in Swift, you have DateComponents, but that's too dynamic (and Date is sometimes referred to as naive, but that's a misunderstanding, since they are timestamps, not date+time).