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by sla29970 1609 days ago
In that case UTC is the wrong answer to the question "What timescale will produce robust results for this application?" As soon as leap seconds were recommended by the CCIR in 1970 radionavigation system administrators announced they would switch to purely atomic TAI-10s and astronomical almanacs continued to use just plain UT. Proceedings of international standards bodies show them discussing how the new CCIR timescale with leap seconds (not yet officially named UTC) need not apply to anything other than radio broadcast time signals.