An alternative to smearing is to persuade applications to deal with UTC and the Gregorian calendar as it is, with its variable-length months and minutes. In support of that alternative, I am making available some subroutines which applications can use to deal with time. This is an update to the preliminary code that I previously posted to the leap seconds mailing list. The code can be extracted from the PDF file at this URL:
<https://commons.wikimedia.org/wiki/File:Avoid_Using_POSIX_time_t_for_T elling_Time.pdf> The subroutines use a table of changes in Delta T to track leap seconds. Most of the table in these subroutines was computed based on the latest research into historical values of Delta T from F. R. Stephenson, L. V. Morrison and C. Y. Hohenkerk in this paper: <http://rspa.royalsocietypublishing.org/content/472/2196/20160404> The computations are described in an update of my earlier paper on this subject, at this URL: <https://commons.wikimedia.org/wiki/File:Extending_Coordinated_Universa l_Time_to_Dates_Before_1972.pdf> I would be glad for any comments anyone might have on my work. John Sauter ([email protected]) -- PGP fingerprint E24A D25B E5FE 4914 A603 49EC 7030 3EA1 9A0B 511E
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