That means I can focus entirely on Saturday and I suppose it will really hit us when we wake up on Saturday morning.

BBC: Big day out

The research team took fruit flies and removed several genes that regulate their internal biological clock, which, in humans, decides when we wake up and go to sleep.

BBC: Body clock link to cocaine addiction

But when we wake up January 1st with a sore head, and the same inhibitions and habits, the year date might have changed but little else seems to have.

FORBES: What's "New Year" Anyway?

"We're going to wake them up when we launch this, " says Rich Bergman, general manager of AMD's graphics product group.

FORBES

Context has to do with why we wake up smiling when sunlight creeps into our bedroom and why we shiver in the cold or withdraw our hands from fire.

FORBES: Age of Context Draft Introduction

When we suggested it would be a good idea to stay up late (or wake up early) to guarantee a launch day iPhone 5, we meant it.

ENGADGET: iPhone 5 shipping times slip almost immediately to 2 weeks, early birds feel validated