If you're using Date::Calc and it handles Klingon time, then your application will now be able to parse and work with Klingon time, without you having to do a thing. That's the point behind using modules. It's code that does more than you ever hoped without you having to lift a finger in support.

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We are the carpenters and bricklayers of the Information Age.

Don't go borrowing trouble. For programmers, this means Worry only about what you need to implement.

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.