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Reply to Comment On: A proposal to change the leap-second adjustment to UTC

Published 25 June 2025 © 2025 BIPM & IOP Publishing Ltd. All rights, including for text and data mining, AI training, and similar technologies, are reserved.
, , Citation Judah Levine 2025 Metrologia 62 048002DOI 10.1088/1681-7575/ade315

0026-1394/62/4/048002

Abstract

A previous paper by Judah Levine in Metrologia (61 055002) proposed a change to the method of maintaining the link between Coordinated Universal Time and UT1 by introducing an algorithmic adjustment process that would replace the current method that uses leap seconds. In addition to presenting the algorithmic method, the paper included a discussion of how the algorithmic adjustments could be computed and realized, and illustrated its advantages over other possible schemes. Petit and Tagliaferro submitted a comment to that paper in which they raised a number of objections to the proposal and discussed an alternate method for computing the magnitude of the periodic adjustments. This contribution replies to the issues that were raised in the comment. It raises a number of technical questions about the analysis in the comment and notes that this analysis included ad hoc assumptions and details that were not clearly justified and whose impact on the results was not clear. The reply also considers the other implications that were raised in the comment, and the reply concludes that the advantages of the algorithmic method outweigh the disadvantages and difficulties raised in the comment.

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