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国际计量局（BIPM）投票决定提前废除闰秒，原定2035年的计划将提前至明年5月20日生效，改用“闰小时”方案以避免潜在的基础设施故障。Meta、Google、微软和亚马逊等科技巨头此前均支持取消闰秒系统。
The 28th CGPM adopted Resolution 5 (2026) laying out technical actions to ensure UTC remains continuous, effectively ending leap second adjustments to keep atomic time in sync with Earth's rotation to avoid disruption of critical infrastructure.
BIPM's 28th CGPM adopts Resolution 5 (2026) outlining technical actions to keep Coordinated Universal Time (UTC) continuous, raising the maximum |UT1−UTC| offset to avoid risky negative leap seconds, with a 30% probability of one by 2035.