Don't miss

Replay


LATEST SHOWS

EYE ON AFRICA

Togo : will president Faure Gnassingbe win a third 5-year term ?

Read more

MEDIAWATCH

Controversy reigns 100 years after the Armenian genocide

Read more

THE WORLD THIS WEEK

Migrant Deaths: Politicians Divided after Emergency EU Summit

Read more

THE WORLD THIS WEEK

The G-Word: Turkey and the Armenian Genocide

Read more

FRANCE IN FOCUS

What will the new French healthcare bill change?

Read more

#TECH 24

Space Special: Happy Birthday, Hubble!

Read more

FOCUS

Video: Meeting Marseille's Armenian community

Read more

REPORTERS

Saving French soldiers' WWI trench carvings

Read more

ENCORE!

Armenia, 100 years on

Read more

Time will stand still for one second

Latest update : 2008-12-31

The world's official timekeeper has decided to add an extra second to the year 2008, one second before midnight GMT tonight, in order to adjust our clocks to solar time. Time will therefore stand still for exactly one second.

AFP - Eager to see the back end of 2008? Be forewarned: the world's official timekeeper has decided to prolong the year -- by one full second, to be precise.

Which means a Champagne-soaked countdown to 2009 something like this: "...THREE, TWO, ONE-AND-A-HALF, ONE... Happy New Year!"

The extra second was mandated by the International Earth Rotation and Reference Systems Service (IERS) in Paris, and is not to be taken lightly.

Satellites that orbit at speeds calculated in kilometres (miles) per second, the Internet, global positioning systems -- all depend on knowing exactly what time it is.

IERS head Daniel Gambis announced the time-stretching measure in July in a letter addressed to "authorities responsible for the measurement and distribution of time".

That would be the white-robed guardians of the 200-odd ultra-accurate atomic clocks scattered in national time temples around the globe.

"The last adjustment dates to 2005, and the next could happen in 2012 or 2013," Gambis told AFP.

Leap days occur once every four years because it takes 365 days plus six hours for our planet to complete an orbit around the Sun.

But leap seconds are added strictly on a case-by-case basis, depending on need. This year's will be the 24th bonus second since the practice was initiated in 1972.

The sleight-of-clock is necessary to reconcile two different time scales.

One is established by the atomic time pieces, which are accurate to billionth of a second per day.

The other is based on Earth's imperfect rotation on its own axis.

The two get out of sync because the planet's spin is affected by a host of slightly fluctuating variables, including solar and lunar gravity, the movement of the tides, solar wind, space dust and magnetic storms.

Even global warming has gotten into the act because melting ice caps have an impact too.

And so, at exactly 23:59:59 Greenwich Mean Time (GMT) -- or Coordinated Universal Time (UTC), to the scientifically literate -- on December 31, the world's clocks will add a beat to their metronomic tick tick tock.

Date created : 2008-12-31

COMMENT(S)