KnowraInternational Atomic TimeLinked fromLinked fromThe 8 pages that link to International Atomic Time, each with the reason it gives.All 8Broader topic 1Related 4Compared with 3Greenwich Mean TimeCompared with: Its clock-based uniformity differs from GMT’s historical solar-time foundation.Leap secondCompared with: It offers uniform elapsed seconds without the rotational alignment that motivates leap seconds.Universal TimeCompared with: Unlike Universal Time, it does not follow the variable rate of Earth’s rotation.