"\uC724\uCD08(\u958F\u79D2, leap second)\uB294 \uD3C9\uADE0 \uD0DC\uC591\uC2DC\uC640 \uC6D0\uC790\uC2DC\uC758 \uC624\uCC28\uB97C \uC870\uC815\uD558\uAE30 \uC704\uD574 \uAC00\uAC10\uD558\uAC8C \uB418\uB294 1\uCD08. 1972\uB144 1\uC6D4 1\uC77C\uBD80\uD130 \uC138\uACC4 \uD45C\uC900\uC2DC\uB85C \uD611\uC815 \uC138\uACC4\uC2DC(UTC)\uB97C \uC0AC\uC6A9\uD558\uACE0 \uC788\uB2E4. 2009\uB144\uC740 1\u79D2 \uB354 \uAE38\uB2E4. 2009\uB144 1\uC6D4 1\uC77C, \uD55C\uAD6D\uC2DC\uAC04\uC73C\uB85C \uC624\uC804 8\uC2DC 59\uBD84 59\uCD08 \uB2E4\uC74C\uC5D0\uB294 1\uCD08\uB97C \uB450 \uBC88 \uD5E4\uC544\uB824\uC84C\uB2E4. \uB2E4\uC2DC \uB9D0\uD574 2009\uB144\uC5D0\uB294 '\uC724\uCD08(\u958F\u79D2)\u2018\uB97C \uC2E4\uC2DC\uD558\uC600\uB2E4. \uAD6D\uC81C\uC9C0\uAD6C\uC790\uC804\uAD6D(IERS, International Earth Rotation Service)\uC774 \uC815\uD55C \uC138\uACC4\uD611\uC815\uC2DC\uC5D0 1\uCD08\uB97C \uB354\uD558\uB294 \uC724\uCD08(\u958F\u79D2)\uB294 \uC9C0\uAD6C \uC790\uC804\uC744 \uAE30\uC900\uC73C\uB85C \uC815\uD558\uB294 \uC138\uACC4\uC2DC\uB294 \uC9C0\uAD6C \uC790\uC804\uC18D\uB3C4\uAC00 \uBD88\uADDC\uCE59\uD55C \uAD00\uACC4\uB85C \uC6D0\uC790\uC2DC\uACC4\uB85C \uCE21\uC815\uD558\uB294 \uC6D0\uC790\uC2DC\uC640\uC758 \uCC28\uC774\uB97C \uBCF4\uC815\uD558\uAE30 \uC704\uD574 \uC0BD\uC785\uB418\uB294 \uCD08\uC774\uB2E4. \uB9E4\uB144 0.8\uCD08 \uB290\uB824\uC9C4\uB2E4. \uB450\uC2DC\uAC04\uC744 \uADFC\uC0AC\uC801\uC73C\uB85C \uAC19\uAC8C \uD558\uAE30 \uC704\uD558\uC5EC \uD544\uC694\uD560 \uB54C\uB9C8\uB2E4 UTC\uC5D0 \uC724\uCD08\uB97C \uB354\uD574 \uC900\uB2E4. \uC6B0\uC120 \uCC9C\uBB38\uC5ED\uBC95\uC740 \uC591\uB825\uC744 \uAE30\uCD08\uB85C \uD558\uB418 \uC74C\uB825\uC744 \uBCD1\uD589\uD574 \uC0AC\uC6A9\uD558\uB3C4\uB85D \uADDC\uC815\uB3FC \uC788\uB2E4. \uD2B9\uD788 \uAD6D\uBBFC\uB4E4\uC5D0\uAC8C \uC724\uCD08\uC5D0 \uAD00\uD55C \uB0B4\uC6A9 \uACF5\uC9C0\uB97C \uADDC\uC815\uD55C \uAC83\uC774 \uB208\uC5D0 \uB748\uB2E4. \uC138\uC298\uC6D0\uC790\uC758 \uC9C4\uB3D9\uC740 \uC5B8\uC81C\uB098 \uD55C\uACB0\uAC19\uC544 \uD3C9\uADE0\uD0DC\uC591\uC2DC(\u592A\u967D\u6642)\uC640 \uC6D0\uC790\uC2DC(\u539F\u5B50\u6642) \uC0AC\uC774\uC5D0 \uCC28\uAC00 \uC0DD\uAE34\uB2E4. \uC5EC\uAE30\uC11C \uC591\uCABD\uC758 \uCC28\uAC00 0.9\uCD08\uB97C \uB118\uC9C0 \uC54A\uB3C4\uB85D \uC870\uC815\uD558\uB294 1\uCD08\uAC00 \uC724\uCD08\uB2E4. \uC601\uAD6D \uCC9C\uBB38\uD559\uACC4\uB294 \uC724\uCD08\uB97C \uD3D0\uC9C0\uD558\uC790\uB294 \uC8FC\uC7A5\uC774 \uACB0\uAD6D \uC2DC\uAC04 \uCCB4\uACC4\uB97C \uCC9C\uBB38\uC2DC\uC5D0\uC11C \uC6D0\uC790\uC2DC\uB85C \uBC14\uAFD4 \uD1B5\uC77C\uD558\uC790\uB294 \uAC83\uC73C\uB85C \uBC1B\uC544\uB4E4\uC774\uACE0 \uC788\uB2E4. 6\uC6D430\uC77C\uC774\uB098 12\uC6D431\uC77C\uC5D0 1\uCD08\uB97C \uB354\uD558\uAC70\uB098 \uBE7C\uB294 \uC724\uCD08\uB97C \uC2E4\uC2DC\uD1A0\uB85D \uACB0\uC815\uD558\uACE0 \uC788\uB2E4."@ko . "\uC724\uCD08(\u958F\u79D2, leap second)\uB294 \uD3C9\uADE0 \uD0DC\uC591\uC2DC\uC640 \uC6D0\uC790\uC2DC\uC758 \uC624\uCC28\uB97C \uC870\uC815\uD558\uAE30 \uC704\uD574 \uAC00\uAC10\uD558\uAC8C \uB418\uB294 1\uCD08. 1972\uB144 1\uC6D4 1\uC77C\uBD80\uD130 \uC138\uACC4 \uD45C\uC900\uC2DC\uB85C \uD611\uC815 \uC138\uACC4\uC2DC(UTC)\uB97C \uC0AC\uC6A9\uD558\uACE0 \uC788\uB2E4. 2009\uB144\uC740 1\u79D2 \uB354 \uAE38\uB2E4. 2009\uB144 1\uC6D4 1\uC77C, \uD55C\uAD6D\uC2DC\uAC04\uC73C\uB85C \uC624\uC804 8\uC2DC 59\uBD84 59\uCD08 \uB2E4\uC74C\uC5D0\uB294 1\uCD08\uB97C \uB450 \uBC88 \uD5E4\uC544\uB824\uC84C\uB2E4. \uB2E4\uC2DC \uB9D0\uD574 2009\uB144\uC5D0\uB294 '\uC724\uCD08(\u958F\u79D2)\u2018\uB97C \uC2E4\uC2DC\uD558\uC600\uB2E4. \uAD6D\uC81C\uC9C0\uAD6C\uC790\uC804\uAD6D(IERS, International Earth Rotation Service)\uC774 \uC815\uD55C \uC138\uACC4\uD611\uC815\uC2DC\uC5D0 1\uCD08\uB97C \uB354\uD558\uB294 \uC724\uCD08(\u958F\u79D2)\uB294 \uC9C0\uAD6C \uC790\uC804\uC744 \uAE30\uC900\uC73C\uB85C \uC815\uD558\uB294 \uC138\uACC4\uC2DC\uB294 \uC9C0\uAD6C \uC790\uC804\uC18D\uB3C4\uAC00 \uBD88\uADDC\uCE59\uD55C \uAD00\uACC4\uB85C \uC6D0\uC790\uC2DC\uACC4\uB85C \uCE21\uC815\uD558\uB294 \uC6D0\uC790\uC2DC\uC640\uC758 \uCC28\uC774\uB97C \uBCF4\uC815\uD558\uAE30 \uC704\uD574 \uC0BD\uC785\uB418\uB294 \uCD08\uC774\uB2E4. \uB9E4\uB144 0.8\uCD08 \uB290\uB824\uC9C4\uB2E4. \uB450\uC2DC\uAC04\uC744 \uADFC\uC0AC\uC801\uC73C\uB85C \uAC19\uAC8C \uD558\uAE30 \uC704\uD558\uC5EC \uD544\uC694\uD560 \uB54C\uB9C8\uB2E4 UTC\uC5D0 \uC724\uCD08\uB97C \uB354\uD574 \uC900\uB2E4. \uC6B0\uC120 \uCC9C\uBB38\uC5ED\uBC95\uC740 \uC591\uB825\uC744 \uAE30\uCD08\uB85C \uD558\uB418 \uC74C\uB825\uC744 \uBCD1\uD589\uD574 \uC0AC\uC6A9\uD558\uB3C4\uB85D \uADDC\uC815\uB3FC \uC788\uB2E4. \uD2B9\uD788 \uAD6D\uBBFC\uB4E4\uC5D0\uAC8C \uC724\uCD08\uC5D0 \uAD00\uD55C \uB0B4\uC6A9 \uACF5\uC9C0\uB97C \uADDC\uC815\uD55C \uAC83\uC774 \uB208\uC5D0 \uB748\uB2E4. \uC138\uC298\uC6D0\uC790\uC758 \uC9C4\uB3D9\uC740 \uC5B8\uC81C\uB098 \uD55C\uACB0\uAC19\uC544 \uD3C9\uADE0\uD0DC\uC591\uC2DC(\u592A\u967D\u6642)\uC640 \uC6D0\uC790\uC2DC(\u539F\u5B50\u6642) \uC0AC\uC774\uC5D0 \uCC28\uAC00 \uC0DD\uAE34\uB2E4. \uC5EC\uAE30\uC11C \uC591\uCABD\uC758 \uCC28\uAC00 0.9\uCD08\uB97C \uB118\uC9C0 \uC54A\uB3C4\uB85D \uC870\uC815\uD558\uB294 1\uCD08\uAC00 \uC724\uCD08\uB2E4."@ko . . "\uC724\uCD08"@ko . .