Leap Second IERS Bulletin 63 expires 2022-12-28
IERS ref: https://hpiers.obspm.fr/iers/bul/bulc/Leap_Second.dat
Alternate: https://www.ietf.org/timezones/data/leap-seconds.list
| IERS | date | LS | NTP | NTP-1900 | NTP-1970 | NTP-2000 | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| MJD | d | m | y | ls | y-m-d | ls | days | seconds | seconds | seconds |
| 41317.0 | 1 | 1 | 1972 | 10 | 1972-01-01 | 10 | 26297 | 2272060800 | 63072000 | -883612800 |
| 41499.0 | 1 | 7 | 1972 | 11 | 1972-07-01 | 11 | 26479 | 2287785600 | 78796800 | -867888000 |
| 41683.0 | 1 | 1 | 1973 | 12 | 1973-01-01 | 12 | 26663 | 2303683200 | 94694400 | -851990400 |
| 42048.0 | 1 | 1 | 1974 | 13 | 1974-01-01 | 13 | 27028 | 2335219200 | 126230400 | -820454400 |
| 42413.0 | 1 | 1 | 1975 | 14 | 1975-01-01 | 14 | 27393 | 2366755200 | 157766400 | -788918400 |
| 42778.0 | 1 | 1 | 1976 | 15 | 1976-01-01 | 15 | 27758 | 2398291200 | 189302400 | -757382400 |
| 43144.0 | 1 | 1 | 1977 | 16 | 1977-01-01 | 16 | 28124 | 2429913600 | 220924800 | -725760000 |
| 43509.0 | 1 | 1 | 1978 | 17 | 1978-01-01 | 17 | 28489 | 2461449600 | 252460800 | -694224000 |
| 43874.0 | 1 | 1 | 1979 | 18 | 1979-01-01 | 18 | 28854 | 2492985600 | 283996800 | -662688000 |
| 44239.0 | 1 | 1 | 1980 | 19 | 1980-01-01 | 19 | 29219 | 2524521600 | 315532800 | -631152000 |
| 44786.0 | 1 | 7 | 1981 | 20 | 1981-07-01 | 20 | 29766 | 2571782400 | 362793600 | -583891200 |
| 45151.0 | 1 | 7 | 1982 | 21 | 1982-07-01 | 21 | 30131 | 2603318400 | 394329600 | -552355200 |
| 45516.0 | 1 | 7 | 1983 | 22 | 1983-07-01 | 22 | 30496 | 2634854400 | 425865600 | -520819200 |
| 46247.0 | 1 | 7 | 1985 | 23 | 1985-07-01 | 23 | 31227 | 2698012800 | 489024000 | -457660800 |
| 47161.0 | 1 | 1 | 1988 | 24 | 1988-01-01 | 24 | 32141 | 2776982400 | 567993600 | -378691200 |
| 47892.0 | 1 | 1 | 1990 | 25 | 1990-01-01 | 25 | 32872 | 2840140800 | 631152000 | -315532800 |
| 48257.0 | 1 | 1 | 1991 | 26 | 1991-01-01 | 26 | 33237 | 2871676800 | 662688000 | -283996800 |
| 48804.0 | 1 | 7 | 1992 | 27 | 1992-07-01 | 27 | 33784 | 2918937600 | 709948800 | -236736000 |
| 49169.0 | 1 | 7 | 1993 | 28 | 1993-07-01 | 28 | 34149 | 2950473600 | 741484800 | -205200000 |
| 49534.0 | 1 | 7 | 1994 | 29 | 1994-07-01 | 29 | 34514 | 2982009600 | 773020800 | -173664000 |
| 50083.0 | 1 | 1 | 1996 | 30 | 1996-01-01 | 30 | 35063 | 3029443200 | 820454400 | -126230400 |
| 50630.0 | 1 | 7 | 1997 | 31 | 1997-07-01 | 31 | 35610 | 3076704000 | 867715200 | -78969600 |
| 51179.0 | 1 | 1 | 1999 | 32 | 1999-01-01 | 32 | 36159 | 3124137600 | 915148800 | -31536000 |
| 53736.0 | 1 | 1 | 2006 | 33 | 2006-01-01 | 33 | 38716 | 3345062400 | 1136073600 | 189388800 |
| 54832.0 | 1 | 1 | 2009 | 34 | 2009-01-01 | 34 | 39812 | 3439756800 | 1230768000 | 284083200 |
| 56109.0 | 1 | 7 | 2012 | 35 | 2012-07-01 | 35 | 41089 | 3550089600 | 1341100800 | 394416000 |
| 57204.0 | 1 | 7 | 2015 | 36 | 2015-07-01 | 36 | 42184 | 3644697600 | 1435708800 | 489024000 |
| 57754.0 | 1 | 1 | 2017 | 37 | 2017-01-01 | 37 | 42734 | 3692217600 | 1483228800 | 536544000 |
Miscellaneous dates of interest
| MJD | d | m | y | ls | y-m-d | ls | days | seconds | seconds | seconds |
|---|---|---|---|---|---|---|---|---|---|---|
| 15020.0 | 1 | 1 | 1900 | 0 | 1900-01-01 | 0 | 0 | 0 | -2208988800 | -3155673600 |
| 15021.0 | 2 | 1 | 1900 | 0 | 1900-01-02 | 0 | 1 | 86400 | -2208902400 | -3155587200 |
| 40587.0 | 1 | 1 | 1970 | 0 | 1970-01-01 | 0 | 25567 | 2208988800 | 0 | -946684800 |
| 51544.0 | 1 | 1 | 2000 | 32 | 2000-01-01 | 32 | 36524 | 3155673600 | 946684800 | 0 |
| 59580.0 | 1 | 1 | 2022 | 37 | 2022-01-01 | 37 | 44560 | 3849984000 | 1640995200 | 694310400 |