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Line 12: It is the responsibility of the [[International Earth Rotation and Reference Systems Service]] to measure the Earth's rotation and determine whether a leap second is necessary. Their determination is announced in Bulletin C, published every six months. Note that leap seconds have nothing to do with [[leap year]]s. ==External ~~references:~~links== * IERS Bulletin, where leap seconds are announced: http://www.iers.org/iers/publications/bulletins/bull_c/ * [http://www.iers.org/iers/publications/bulletins/bull_c/ IERS Bulletin, where leap seconds are announced] * IERS information about Bulletin C and when leap seconds may occur: http://hpiers.obspm.fr/eoppc/bul/bulc/BULLETINC.GUIDE * [http://hpiers.obspm.fr/eoppc/bul/bulc/BULLETINC.GUIDE IERS information about Bulletin C and when leap seconds may occur] * ~~IERS Archive, to view old announcements:~~ [http://www.iers.org/iers/earth/rotation/utc/table2.html IERS Archive, to view old announcements] * [http://tycho.usno.navy.mil/leapsec.html USNO article on leap seconds]

Leap second: Difference between revisions