Last year, I tweeted:
Good morning!
Have you audited your code to fix all uses of YYYY where you meant yyyy yet?
If not: Happy 2015!
— Peter Hosey (@boredzo) December 29, 2014
This year, I noticed that the problem comes earlier, so I sent out an early reminder:
You probably want to do this year's YYYY audit soon, because 2016 starts on Dec 26 this year: https://twitter.com/boredzo/status/549582777956323331
— Pumpkin Hollow (@boredzo) October 24, 2015
But exactly what problem am I refe