Yeah I'm guess whatever disaster was meant to happen didn't go, "Yup, 21st December, 00:01 his time, let's get these black holes open and create chaos!".
If you gon' believe bullcrap like such disaster, at least wait until 23rd to show your faith. Otherwise, just another day, granted, with spam of "Woo, nothing happened" and "In your face". That's probably the largest disaster that's going to happen.