Participants come from all over the world, work in different time-zones and donate their time after (and sometime while) dealing with day jobs and family.

FORBES: Citing Strong Growth CloudStack Becomes A Top-Level Apache Project

This year, it adds Sporting World Time , a blue-dial watch that keeps track of time in 24 time zones, to the brand's Sporting collection.

WSJ: The Face of Watchmaking's Future at SIHH and GTE

The shot-blasted, satin-brushed and polished rotating bezel bears the names of 24 world cities, symbols of the international 24 time zones on its brown upper flange.

FORBES: Richard Mille RM58-01 Tourbillon World Timer

World-time wristwatches, which simultaneously tell the hour in all 24 time zones, debuted in the 1930s at the dawn of commercial air travel.

WSJ: World-Time Keeping Wristwatches

Chukotka lies nine time zones from Moscow and is about as far away from the world of Premier League football and all its excesses as you are likely to get.

BBC: Roman's Moscow homecoming

The Life and Time of Tim Hetherington - a portrait of photographer Hetherington's work in war zones around the world.

BBC: Ashton Kutcher as Steve Jobs