KnowraLeap secondLinked fromLinked fromThe 12 pages that link to Leap second, each with the reason it gives.All 12Broader topic 2Related 8Compared with 2Greenwich Mean TimeRelated: Leap seconds reconcile atomic time with the rotation-based reference once associated with GMT.Universal TimeRelated: The difference between atomic time and UT1 determines when this adjustment is needed.Unix timeRelated: Unix time excludes leap seconds, so it does not count every UTC second uniformly.Network Time ProtocolRelated: Leap-second handling can make synchronized clocks behave differently at UTC adjustments.International Atomic TimeRelated: Leap seconds change UTC’s offset from continuous TAI without interrupting TAI.DayRelated: It compensates for the mismatch between uniform atomic time and the variable solar day.MidnightRelated: It can alter the seconds surrounding midnight in UTC-based clocks.Real-time clockRelated: Its irregular insertion makes a simple hardware calendar clock imperfect as a UTC source.