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January 31 will be a second longer

December 30 2008
11:56

If someone has a Christmas table, scream "Happy New Year" a second later, you should not laugh at him. International Earth Rotation Service has decided to add to the outgoing year, a second coordinate to compensate for the error standard of terrestrial time with the duration of solar day.

Second coordinate, also called leap second was introduced by the International Astronomical Union in 1972. The reason for the creation of such compensation has been slowing down the Earth's rotation, which occurs with an acceleration 31 sekunda/vek2.

Over the past 27 years, leap seconds added to 24-fold. In accordance with the rules of the International Earth Rotation Service to adjust time extra seconds is introduced on June 30 or December 31. Last time this rule was used on Dec. 31, 2005.

Weights and measures department admits Unlike standard time on Earth from the solar day by 0,9 seconds. Any error is compensated by higher leap second. Theoretically, you can enter and negative seconds, which would have shortened the duration of the year, but this is our planet must speed up its rotation.

Each adjustment of planetary time highlights the special bulletin of the International Earth Rotation Service, produced six months before the expected date of correction of error.

Waiting for us to be the last event in the career leap second. In accordance with the decision of the International Astronomical Union, the adjustment will be abolished. Instead it will use another way, more radical, but used very rarely. So, once in 600 years to the last month of the year will be added for an hour.

25 hours a day - the dream of every workaholic. But in our century, this event will not happen - the immediate adjustment in this way is planning for the 2550th year. We will be witnessing the last tour of leap seconds.

Paul Urushev

Андрей Гальперин

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