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New Year's Day 2006: delayed by a second	錕斤拷錕斤拷錕斤拷轉(zhuǎn)錕斤拷錕斤拷 2006錕疥將錕斤拷一錕誡到錕斤拷
Scientists are delaying the start of 2006 by a leap second. Get ready for a minute with 61 seconds. Scientists are delaying the start of 2006 by the first "leap second" in seven years, a timing tweak meant to make up for changes in the Earth's rotation. The adjustment will be carried out by sticking an extra second into atomic clocks worldwide at the stroke of midnight Coordinated Universal Time, the widely adopted international standard, the U.S. National Institute of Standards and Technology said. "Enjoy New Year's Eve a second longer," the institute said in an explanatory notice. "You can toot your horn an extra second this year." Coordinated Universal Time coincides with winter time in London. On the U.S. East Coast, the extra second occurs just before 7 p.m. on New Year's Eve. Atomic clocks at that moment will read 23:59:60 before rolling over to all zeros. A leap second is added to keep uniform timekeeping within 0.9 second of the Earth's rotational time, which can speed up or slow down because of many factors, including ocean tides. The first leap second was added on June 30, 1972, according to NIST. Since 1999 until recently, the two time standards have been in close enough synch to escape any need to add a leap second, NIST said. Although it is possible to have a negative leap second -- that is, a second deducted from Coordinated Universal Time -- so far all have been add-ons, reflecting the Earth's general slowing trend due to tidal braking. Deciding when to introduce a leap second is the responsibility of the International Earth Rotation and Reference Systems Service. Under an international pact, the preference for leap seconds is December 31 or June 30. Precise time measurements are needed for high-speed communications systems among other modern technologies.   (Agencies)	錕斤拷準(zhǔn)錕斤拷錕斤拷錕斤拷錕斤拷2006錕斤拷元錕斤拷錕斤拷錕斤拷之前錕斤拷錕斤拷一錕斤拷錕接憋拷錕?1錕誡。錕斤拷學(xué)錕斤拷錕角幫拷2006錕斤拷牡錕斤拷錕斤拷瞥錕斤拷錕揭伙拷錕斤拷錕斤拷搿憋拷錕斤拷舜錕餃�锟藉K斤拷錕斤拷時(shí)錕斤拷錕較達(dá)拷錕斤拷錕斤拷7錕斤拷時(shí)錕戒，錕斤拷錕斤拷時(shí)錕斤拷錕斤拷要原錕斤拷錕斤拷錕角碉拷錕斤拷錕斤拷轉(zhuǎn)錕劫度的變化錕斤拷 錕斤拷錕斤拷錕斤拷錕斤拷錕揭憋拷準(zhǔn)錕誡技錕斤拷協(xié)錕斤拷錕斤拷埽錕餃�锟藉K斤拷錕斤拷原錕斤拷錕接訛拷錕斤拷錕斤拷協(xié)錕斤拷錕斤拷錕斤拷時(shí)2005錕斤拷12錕斤拷31錕斤拷錕斤拷夜錕斤拷錕斤拷一錕斤拷錕斤拷錕誡。協(xié)錕斤拷錕斤拷錕斤拷時(shí)錕斤拷通錕矯的癸拷錕絞憋拷準(zhǔn)時(shí)錕戒。 錕斤拷協(xié)錕斤拷錕斤拷一錕斤拷通錕斤拷錕斤拷錕斤拷錕剿碉拷錕斤拷錕斤拷錕斤拷錕角耙癸拷錕斤拷錕階ｏ拷錕斤拷錕斤拷一錕誡。錕角撅拷迎錕鉸碉拷錕斤拷錕斤拷錕斤拷也錕斤拷錕接籌拷一錕誡。錕斤拷 錕斤拷協(xié)錕斤拷錕斤拷錕斤拷時(shí)恰錕斤拷錕斤拷錕階敦的訛拷錕斤拷時(shí)錕斤拷錕角合★拷錕斤拷錕斤拷錕斤拷錕斤拷錕斤拷錕截猴拷錕斤拷錕斤拷一錕誡將錕斤拷2005錕斤拷12錕斤拷31錕斤拷錕斤拷錕較碉拷6時(shí)59錕斤拷59錕誡被錕斤拷錕較★拷錕斤拷時(shí)錕斤拷錕斤拷錕斤拷原錕斤拷錕接斤拷錕斤拷錕斤拷示23:59:60錕斤拷錕斤拷錕斤拷錕斤拷00:00:00錕斤拷 錕斤拷錕斤拷錕斤拷一錕斤拷錕斤拷錕斤拷為錕剿憋拷證協(xié)錕斤拷錕斤拷錕斤拷時(shí)錕斤拷原錕斤拷時(shí)錕斤拷錕酵碉拷錕斤拷錕斤拷轉(zhuǎn)時(shí)錕戒（錕斤拷錕斤拷時(shí)錕斤拷之錕斤拷牟錕斤拷錕斤拷錕斤拷錕?.9錕斤拷錕斤拷錕節(jié)ｏ拷錕斤拷錕斤拷錕斤拷轉(zhuǎn)錕劫度的加匡拷錕斤拷錕斤拷錕杰碉拷錕杰訛拷錕斤拷錕截碉拷影錕屆，錕斤拷汐錕斤拷錕斤拷錕斤拷錕斤拷之一錕斤拷錕捷癸拷錕揭憋拷準(zhǔn)錕誡技錕斤拷協(xié)錕斤拷錕斤拷埽錕斤拷錕揭伙拷錕斤拷錕斤拷錕斤拷錕斤拷錕?972錕斤拷6錕斤拷30錕秸憋拷錕斤拷錕斤拷摹錕? 錕斤拷協(xié)錕斤拷說(shuō)錕斤拷錕斤拷1999錕疥開(kāi)始錕斤拷錕斤拷錕斤拷錕斤拷輳�原锟藉K絞憋拷錕斤拷錕斤拷錕絞幣恢憋拷錕斤拷錕酵�锟藉K階刺�锟藉K斤拷錕斤拷圓錕斤拷錕揭�锟藉K斤拷錕揭伙拷錕斤拷錕斤拷搿? 錕斤拷錕斤拷也錕斤拷實(shí)施錕斤拷錕斤拷錕斤拷錕狡ｏ拷錕斤拷協(xié)錕斤拷錕斤拷錕斤拷時(shí)錕叫扣籌拷一錕誡）錕僥匡拷錕杰ｏ拷錕斤拷錕斤拷錕斤拷為止錕斤拷只錕叫加ｏ拷?jīng)]錕叫鹼拷錕斤拷錕斤拷說(shuō)錕斤拷錕斤拷錕斤拷錕杰籌拷汐錕斤拷錕劫碉拷影錕屆，錕斤拷錕斤拷錕斤拷錕階�锟絺R卻錕斤拷錕斤拷銑始錕斤拷錕斤拷錕斤拷啤錕? 錕斤拷錕絞碉拷錕斤拷錕斤拷轉(zhuǎn)錕斤拷錕斤拷錕斤拷織錕斤拷錕斤拷錕斤拷錕斤拷錕絞憋拷蛹錕斤拷錕斤拷搿ｏ拷錕斤拷莨錕斤拷使錕皆鹼拷錕揭伙拷錕斤拷錕?2錕斤拷31錕秸伙拷6錕斤拷30錕斤拷錕斤拷協(xié)錕斤拷錕斤拷錕斤拷時(shí)錕叫鹼拷錕斤拷錕斤拷去錕斤拷錕誡。 錕斤拷錕斤拷錕斤拷錕街達(dá)拷錕斤拷學(xué)錕斤拷錕斤拷錕斤拷齲錕斤拷詬錕斤拷錕酵ㄑ斷低籌拷校錕絞憋拷錕僥撅拷確錕斤拷錕皆碉拷錕斤拷為錕斤拷要錕斤拷 (錕叫癸拷錕秸憋拷錕斤拷站錕斤拷錕斤拷)