# UTC.txt, 15 Apr 10

!title UTC

!fuzz 0.000001

!msgpostfix \n

86400.0      | Seconds in a solar day (actual)
86400.0002   | Seconds in a solar day (estimated)
86164.09053  | Seconds in a sidereal day
23.93447     | Hours in a sidereal day
0.99726957   | SI days in a siderial day
86164.09890  | Seconds in a stellar day

1.002737923  | Relative speed of sidereal and solar time

354.37       | Days in mean year in lunar calendars
365.24219    | Days in mean tropical year near the year 2000
365.2424     | Days in vernal equinox year
365.2425     | Days in mean year in the Gregorian calendar
365.25       | Days in mean year in the Julian calendar
365.2564     | Days a sidereal year

27.3217      | Days in sidereal month
29.53059     | Days in mean synodic month
30.436875    | Days in mean length of a Gregorian calendar month

2415021.0    | Julian date of 1 Jan 1900
2451545.0    | Julian date of 1 Jan 2000

7.2921159e-5 | Angular rotation of the Earth in radians per second


!msgpostfix  Julian date on which a leap second was added\n

2437300.5  | 1961 JAN  1
2437512.5  | 1961 AUG  1
2437665.5  | 1962 JAN  1
2438334.5  | 1963 NOV  1
2438395.5  | 1964 JAN  1
2438486.5  | 1964 APR  1
2438639.5  | 1964 SEP  1
2438761.5  | 1965 JAN  1
2438820.5  | 1965 MAR  1
2438942.5  | 1965 JUL  1
2439004.5  | 1965 SEP  1
2439126.5  | 1966 JAN  1
2439887.5  | 1968 FEB  1
2441317.5  | 1972 JAN  1,  10.0
2441499.5  | 1972 JUL  1,  11.0
2441683.5  | 1973 JAN  1,  12.0
2442048.5  | 1974 JAN  1,  13.0
2442413.5  | 1975 JAN  1,  14.0
2442778.5  | 1976 JAN  1,  15.0
2443144.5  | 1977 JAN  1,  16.0
2443509.5  | 1978 JAN  1,  17.0
2443874.5  | 1979 JAN  1,  18.0
2444239.5  | 1980 JAN  1,  19.0
2444786.5  | 1981 JUL  1,  20.0
2445151.5  | 1982 JUL  1,  21.0
2445516.5  | 1983 JUL  1,  22.0
2446247.5  | 1985 JUL  1,  23.0
2447161.5  | 1988 JAN  1,  24.0
2447892.5  | 1990 JAN  1,  25.0
2448257.5  | 1991 JAN  1,  26.0
2448804.5  | 1992 JUL  1,  27.0
2449169.5  | 1993 JUL  1,  28.0
2449534.5  | 1994 JUL  1,  29.0
2450083.5  | 1996 JAN  1,  30.0
2450630.5  | 1997 JUL  1,  31.0
2451179.5  | 1999 JAN  1,  32.0
2453736.5  | 2006 JAN  1,  33.0
2454832.5  | 2009 JAN  1,  34.0


!msgpostfix  Modified Julian date on which a leap second was added\n

37300.0  | 1961 JAN  1
37512.0  | 1961 AUG  1
37665.0  | 1962 JAN  1
38334.0  | 1963 NOV  1
38395.0  | 1964 JAN  1
38486.0  | 1964 APR  1
38639.0  | 1964 SEP  1
38761.0  | 1965 JAN  1
38820.0  | 1965 MAR  1
38942.0  | 1965 JUL  1
39004.0  | 1965 SEP  1
39126.0  | 1966 JAN  1
39887.0  | 1968 FEB  1
41317.0  | 1972 JAN  1,  10.0
41499.0  | 1972 JUL  1,  11.0
41683.0  | 1973 JAN  1,  12.0
42048.0  | 1974 JAN  1,  13.0
42413.0  | 1975 JAN  1,  14.0
42778.0  | 1976 JAN  1,  15.0
43144.0  | 1977 JAN  1,  16.0
43509.0  | 1978 JAN  1,  17.0
43874.0  | 1979 JAN  1,  18.0
44239.0  | 1980 JAN  1,  19.0
44786.0  | 1981 JUL  1,  20.0
45151.0  | 1982 JUL  1,  21.0
45516.0  | 1983 JUL  1,  22.0
46247.0  | 1985 JUL  1,  23.0
47161.0  | 1988 JAN  1,  24.0
47892.0  | 1990 JAN  1,  25.0
48257.0  | 1991 JAN  1,  26.0
48804.0  | 1992 JUL  1,  27.0
49169.0  | 1993 JUL  1,  28.0
49534.0  | 1994 JUL  1,  29.0
50083.0  | 1996 JAN  1,  30.0
50630.0  | 1997 JUL  1,  31.0
51179.0  | 1999 JAN  1,  32.0
53736.0  | 2006 JAN  1,  33.0
54832.0  | 2009 JAN  1,  34.0

