RELATIONSHIP BETWEEN TAI AND UTC
Limits of validity (at 0h UTC) TAI-UTC (MJD = Modified Julian Day)
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1961 Jan. 1 - 1961 Aug. 1 1.422 818 0s + (MJD - 37 300) x 0.001 296s
Aug. 1 - 1962 Jan. 1 1.372 818 0s + ""
1962 Jan. 1 - 1963 Nov. 1 1.845 858 0s + (MJD - 37 665) x 0.001 123 2s
1963 Nov. 1 - 1964 Jan. 1 1.945 858 0s + ""
1964 Jan. 1 - April 1 3.240 130 0s + (MJD - 38 761) x 0.001 296s
April 1 - Sept. 1 3.340 130 0s + ""
Sept. 1 - 1965 Jan. 1 3.440 130 0s + ""
1965 Jan. 1 - March 1 3.540 130 0s + ""
March 1 - Jul. 1 3.640 130 0s + ""
Jul. 1 - Sept. 1 3.740 130 0s + ""
Sept. 1 - 1966 Jan. 1 3.840 130 0s + ""
1966 Jan. 1 - 1968 Feb. 1 4.313 170 0s + (MJD - 39 126) x 0.002 592s
1968 Feb. 1 - 1972 Jan. 1 4.213 170 0s + ""
1972 Jan. 1 - Jul. 1 10s
Jul. 1 - 1973 Jan. 1 11s
1973 Jan. 1 - 1974 Jan. 1 12s
1974 Jan. 1 - 1975 Jan. 1 13s
1975 Jan. 1 - 1976 Jan. 1 14s
1976 Jan. 1 - 1977 Jan. 1 15s
1977 Jan. 1 - 1978 Jan. 1 16s
1978 Jan. 1 - 1979 Jan. 1 17s
1979 Jan. 1 - 1980 Jan. 1 18s
1980 Jan. 1 - 1981 Jul. 1 19s
1981 Jul. 1 - 1982 Jul. 1 20s
1982 Jul. 1 - 1983 Jul. 1 21s
1983 Jul. 1 - 1985 Jul. 1 22s
1985 Jul. 1 - 1988 Jan. 1 23s
1988 Jan. 1 - 1990 Jan. 1 24s
1990 Jan. 1 - 1991 Jan. 1 25s
1991 Jan. 1 - 1992 Jul. 1 26s
1992 Jul. 1 - 1993 Jul 1 27s
1993 Jul. 1 - 1994 Jul. 1 28s
1994 Jul. 1 - 1996 Jan. 1 29s
1996 Jan. 1 - 1997 Jul. 1 30s
1997 Jul. 1 - 1999 Jan. 1 31s
1999 Jan. 1 - 2006 Jan. 1 32s
2006 Jan. 1 - 2009 Jan. 1 33s
2009 Jan. 1 - 2012 Jul. 1 34s
2012 Jul. 1 - 2015 Jul. 1 35s
2015 Jul. 1 - 2017 Jan. 1 36s
2017 Jan. 1 - 37s