Bulletin Horaire
Bureau International de l'Heure (BIH)
Bulletin Horaire was the regular publication of
the Bureau International de l'Heure (BIH, International Time
Bureau).
The first issue appeared in 1921, and the final issue appeared in 1967.
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Index of issues of Bulletin Horaire
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Over the course of its history the BIH used several different
schemes for nomenclature, numbering, and lettering the issues
of Bulletin Horaire.
Without an index the sequence of the issues is inscrutable.
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Bulletin Horaire in 1955
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Results of the IAU meeting in Dublin.
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BIH values for UT2-UT1
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The 1955 IAU meeting in Dublin directed the BIH to create and
publish an expression for the seasonal variations of earth rotation.
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The epoch of TAI is 1961-01-01T20 UT2(BIH)
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Anna Stoyko reset the values of all of the BIH atomic time
scales as of 1961-01-01T20:00:00 UT2(Paris).
As of that date Anna Stoyko began tabulating the time scale A3
which later became TAI (International Atomic Time).
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Bulletin Horaire series H number 2 page 43
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Anna Stoyko published tables and algorithms allowing all tabulated
values of Heure definitive to be reduced from their original reference
system to the BIH system of 1962.
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Bulletin Horaire series H number 5 page 142
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Anna Stoyko published tables showing the improvement in
accuracy and precision of time services from 1922 to 1963.
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Bulletin Horaire pages from 1954, 1961, 1966
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Images of selected pages of Bulletin Horaire
showing some of the reports and tabulations.
Steve Allen <sla@ucolick.org>
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