CoreyNever roll your own date time library kids
Kevin Karhan 
@LifesAHaskell didn't @tomscott had a little meltdown on #computerphile about that exact problem?
The Problem with Time & Timezones - Computerphile
A web app that works out how many seconds ago something happened. How hard can coding that be? Tom Scott explains how time twists and turns like a twisty-tur...
@kkarhan @LifesAHaskell @tomscott it’s a valuable lesson to learn, and unfortunately you either learn from the mistakes of others or the hard way.