ΔT, DUT1, TT - TDB

This page is periodically updated with some graphs and data related to the time scales.
The data files used for the calculations are:

- "EOP-All.txt" downloaded from CelesTrak; current file: Loading...
- "TTmTDB.de430.19feb2015.bsp" downloaded from ssd.jpl.nasa.gov.

Most of the definitions are taken from the IERS Technical Note No. 36 (IERS Conventions 2010).

ΔT and DUT1

The following graph shows ΔT = TT - UT1 and DUT1 = UT1 - UTC. The dashed vertical line represents the start date of the predicted values.

Terrestrial time and barycentric dynamical time

Here's the difference between the terrestrial time and the barycentric dynamical time obtained from the integration of the JPL's DE430 ephemeris.
The values of TT - TDB and of d(TT-TDB)/d(TDB) are saved in the file "TTmTDB.de430.19feb2015.bsp" and can be calculated with the algorithm explained in the paper: The Planetary and Lunar Ephemerides DE430 and DE431 page 6 (3.5 MiB).

The graph shows a visually perfect sinusoid for TT - TDB (blue plot), but the orange plot (the derivative of that "sinusoid") clearly shows that TT - TDB is affected by several perturbations; see next graph.

Here are the components of TT - TDB for the years 2018-2025 calculated as explained here for the Earth satellites perturbations.
The main component is 1.67 ms and its period is 365.29 days. The 2^nd component is 13.8 µs and its period is 182.6 days (about 6 months). The 3^rd component is 1.2 µs and its period is 29.4 days. The 4^th component is 34.7 ns and its period is 14.3 days.

UTC	TT-TDB	UTC	TT-TDB	UTC	TT-TDB
1900-01-01 14:52:43	0	1967-01-03 11:52:44	0	2034-01-04 18:07:09	0
1900-04-02 12:13:47	-1.679	1967-04-03 22:18:17	-1.637	2034-04-04 08:05:09	-1.653
1900-07-03 03:56:16	0	1967-07-04 20:09:09	0	2034-07-06 03:37:48	0
1900-10-04 00:13:55	1.691	1967-10-04 09:21:55	1.640	2034-10-06 06:24:14	1.653
1901-01-02 04:13:35	0	1968-01-03 07:18:38	0	2035-01-04 22:36:19	0
1901-04-01 20:22:12	-1.683	1968-04-02 23:08:44	-1.647	2035-04-05 20:13:23	-1.647
1901-07-03 14:57:20	0	1968-07-03 18:49:32	0	2035-07-06 14:24:45	0
1901-10-04 10:32:49	1.697	1968-10-04 16:32:42	1.651	2035-10-06 05:24:15	1.638
1902-01-03 01:12:05	0	1969-01-02 11:12:09	0	2036-01-04 19:47:05	0
1902-04-03 12:12:56	-1.678	1969-04-02 01:11:26	-1.650	2036-04-04 03:29:11	-1.639
1902-07-04 10:30:30	0	1969-07-03 18:02:56	0	2036-07-05 13:28:38	0
1902-10-04 11:28:09	1.685	1969-10-04 04:06:29	1.662	2036-10-06 04:38:27	1.628
1903-01-03 15:19:57	0	1970-01-02 18:36:09	0	2037-01-03 15:13:11	0
1903-04-04 00:50:01	-1.675	1970-04-03 14:37:32	-1.654	2037-04-03 09:29:53	-1.632
1903-07-05 03:52:22	0	1970-07-04 01:49:12	0	2037-07-05 06:36:57	0
1903-10-06 03:22:53	1.675	1970-10-04 03:39:50	1.671	2037-10-05 00:18:57	1.626
1904-01-04 01:09:33	0	1971-01-03 02:46:35	0	2038-01-03 13:05:39	0
1904-04-02 16:35:31	-1.665	1971-04-03 09:34:58	-1.668	2038-04-04 13:50:20	-1.635
1904-07-04 12:36:28	0	1971-07-04 15:52:14	0	2038-07-05 07:58:47	0
1904-10-04 10:38:36	1.664	1971-10-05 21:57:28	1.683	2038-10-05 08:25:28	1.626
1905-01-03 05:35:36	0	1972-01-03 20:08:03	0	2039-01-03 10:58:18	0
1905-04-04 01:26:41	-1.652	1972-04-02 12:05:25	-1.669	2039-04-03 15:29:50	-1.642
1905-07-04 18:20:19	0	1972-07-04 01:39:37	0	2039-07-05 03:47:47	0
1905-10-04 15:47:34	1.645	1972-10-04 05:43:44	1.685	2039-10-05 19:44:57	1.640
1906-01-03 01:04:14	0	1973-01-03 08:39:25	0	2040-01-03 12:43:52	0
1906-04-03 04:29:51	-1.644	1973-04-04 04:33:57	-1.671	2040-04-02 15:23:02	-1.649
1906-07-04 17:11:12	0	1973-07-04 18:24:31	0	2040-07-04 00:50:55	0
1906-10-05 10:16:34	1.640	1973-10-05 10:51:23	1.677	2040-10-03 20:00:28	1.656
1907-01-03 01:43:01	0	1974-01-03 22:46:57	0	2041-01-02 18:54:32	0
1907-04-02 23:03:08	-1.643	1974-04-03 16:58:13	-1.666	2041-04-03 17:55:16	-1.657
1907-07-04 15:25:31	0	1974-07-05 12:05:42	0	2041-07-04 09:31:06	0
1907-10-04 08:07:13	1.640	1974-10-06 05:17:11	1.665	2041-10-05 02:20:20	1.664
1908-01-03 01:11:37	0	1975-01-04 11:18:09	0	2042-01-03 04:29:27	0
1908-04-02 23:05:12	-1.646	1975-04-04 20:45:15	-1.654	2042-04-03 00:37:53	-1.664
1908-07-03 12:59:07	0	1975-07-05 23:10:57	0	2042-07-04 17:57:05	0
1908-10-03 19:26:39	1.644	1975-10-05 08:23:44	1.650	2042-10-05 11:42:09	1.679
1909-01-01 21:37:23	0	1976-01-04 09:10:03	0	2043-01-03 20:47:52	0
1909-04-01 19:28:00	-1.652	1976-04-04 04:06:10	-1.649	2043-04-04 09:20:48	-1.672
1909-07-03 09:31:58	0	1976-07-05 04:45:55	0	2043-07-05 08:32:55	0
1909-10-04 02:41:06	1.657	1976-10-05 17:03:21	1.638	2043-10-05 09:55:26	1.686
1910-01-02 05:19:25	0	1977-01-03 07:17:38	0	2044-01-04 12:33:47	0
1910-04-02 12:15:15	-1.653	1977-04-02 23:00:07	-1.638	2044-04-03 22:21:46	-1.676
1910-07-03 14:40:53	0	1977-07-05 01:20:06	0	2044-07-04 23:51:06	0
1910-10-03 10:14:50	1.664	1977-10-05 03:00:14	1.628	2044-10-06 04:56:03	1.682
1911-01-02 11:52:56	0	1978-01-03 04:02:05	0	2045-01-04 04:34:42	0
1911-04-03 07:06:04	-1.663	1978-04-03 23:36:48	-1.634	2045-04-03 17:47:36	-1.669
1911-07-04 00:42:39	0	1978-07-04 21:44:16	0	2045-07-05 12:34:20	0
1911-10-05 00:06:53	1.675	1978-10-04 09:05:23	1.625	2045-10-05 18:14:25	1.675
1912-01-02 21:42:34	0	1979-01-02 22:50:47	0	2046-01-04 19:13:48	0
1912-04-01 12:41:18	-1.671	1979-04-03 13:59:29	-1.645	2046-04-05 16:26:15	-1.662
1912-07-03 08:49:57	0	1979-07-04 20:58:38	0	2046-07-06 08:12:22	0
1912-10-03 23:20:53	1.687	1979-10-05 15:34:16	1.635	2046-10-06 10:18:14	1.658
1913-01-02 14:41:06	0	1980-01-03 00:37:31	0	2047-01-05 00:19:38	0
1913-04-03 05:06:47	-1.671	1980-04-01 19:55:35	-1.648	2047-04-05 02:01:48	-1.652
1913-07-03 23:00:53	0	1980-07-03 14:31:21	0	2047-07-06 14:39:38	0
1913-10-04 02:43:50	1.681	1980-10-03 13:32:03	1.648	2047-10-07 05:12:29	1.649
1914-01-03 02:30:39	0	1981-01-02 02:30:29	0	2048-01-05 00:23:08	0
1914-04-03 08:33:28	-1.672	1981-04-03 04:28:02	-1.655	2048-04-03 23:03:14	-1.641
1914-07-04 15:11:59	0	1981-07-03 16:45:08	0	2048-07-05 12:03:57	0
1914-10-05 17:58:17	1.675	1981-10-03 17:44:28	1.661	2048-10-05 03:21:28	1.641
1915-01-03 18:30:40	0	1982-01-02 09:34:07	0	2049-01-03 22:40:03	0
1915-04-03 13:02:54	-1.666	1982-04-02 16:43:26	-1.665	2049-04-04 18:26:36	-1.638
1915-07-05 07:03:21	0	1982-07-04 03:28:07	0	2049-07-05 13:00:41	0
1915-10-05 03:00:45	1.663	1982-10-05 04:13:10	1.674	2049-10-05 22:19:24	1.632
1916-01-04 02:22:55	0	1983-01-03 00:55:52	0	2050-01-03 19:27:38	0
1916-04-04 00:48:20	-1.656	1983-04-03 01:36:23	-1.670	2050-04-03 15:16:30	-1.639
1916-07-04 17:20:06	0	1983-07-04 12:34:42	0	2050-07-05 08:37:10	0
1916-10-04 17:46:28	1.646	1983-10-04 11:34:57	1.686	2050-10-05 22:43:40	1.640
1917-01-02 22:47:00	0	1984-01-03 13:33:29	0	2051-01-03 22:01:41	0
1917-04-02 22:35:22	-1.646	1984-04-03 10:14:34	-1.680	2051-04-04 05:28:48	-1.645
1917-07-04 17:26:37	0	1984-07-04 03:50:26	0	2051-07-05 07:34:54	0
1917-10-05 04:10:06	1.638	1984-10-05 01:57:08	1.689	2051-10-05 00:58:55	1.650
1918-01-02 22:54:32	0	1985-01-03 06:57:39	0	2052-01-04 00:15:16	0
1918-04-03 03:34:38	-1.637	1985-04-02 21:55:04	-1.679	2052-04-03 17:43:40	-1.653
1918-07-04 17:05:20	0	1985-07-04 18:48:30	0	2052-07-04 09:59:28	0
1918-10-04 03:21:05	1.627	1985-10-05 12:52:53	1.683	2052-10-05 07:21:21	1.660
1919-01-02 18:05:04	0	1986-01-04 00:06:33	0	2053-01-03 05:46:23	0
1919-04-03 17:22:23	-1.640	1986-04-04 13:44:56	-1.671	2053-04-02 20:53:58	-1.656
1919-07-04 14:40:13	0	1986-07-05 11:12:44	0	2053-07-04 12:43:29	0
1919-10-04 23:35:32	1.628	1986-10-05 04:57:06	1.671	2053-10-05 03:34:25	1.676
1920-01-02 13:03:47	0	1987-01-04 08:58:33	0	2054-01-03 20:31:55	0
1920-04-01 09:58:52	-1.648	1987-04-04 22:22:24	-1.668	2054-04-04 13:43:33	-1.662
1920-07-03 07:56:15	0	1987-07-06 03:34:02	0	2054-07-05 04:25:40	0
1920-10-03 16:53:02	1.642	1987-10-06 21:37:39	1.659	2054-10-05 09:20:23	1.681
1921-01-01 16:28:52	0	1988-01-04 14:27:12	0	2055-01-04 10:10:06	0
1921-04-02 06:46:40	-1.651	1988-04-03 06:58:06	-1.654	2055-04-04 15:17:17	-1.669
1921-07-03 06:16:05	0	1988-07-05 04:58:38	0	2055-07-05 18:07:59	0
1921-10-02 19:45:39	1.650	1988-10-05 00:52:30	1.647	2055-10-07 00:32:35	1.686
1922-01-01 17:31:32	0	1989-01-03 12:28:39	0	2056-01-05 02:27:15	0
1922-04-02 13:25:11	-1.660	1989-04-04 11:26:54	-1.644	2056-04-03 15:45:18	-1.668
1922-07-03 11:36:16	0	1989-07-05 04:17:17	0	2056-07-05 05:52:49	0
1922-10-04 09:59:19	1.665	1989-10-04 22:21:10	1.638	2056-10-05 12:23:25	1.683
1923-01-02 04:30:50	0	1990-01-03 09:37:34	0	2057-01-04 18:20:12	0
1923-04-01 23:12:54	-1.671	1990-04-03 15:41:47	-1.644	2057-04-05 10:57:59	-1.661
1923-07-03 21:16:44	0	1990-07-05 05:02:01	0	2057-07-06 01:21:49	0
1923-10-04 05:08:47	1.681	1990-10-06 00:02:02	1.637	2057-10-06 15:17:36	1.664
1924-01-02 19:46:40	0	1991-01-03 11:30:48	0	2058-01-05 03:20:18	0
1924-04-02 17:55:50	-1.678	1991-04-03 07:44:13	-1.644	2058-04-04 21:45:42	-1.651
1924-07-03 09:35:02	0	1991-07-04 22:51:48	0	2058-07-06 13:11:08	0
1924-10-03 13:29:47	1.687	1991-10-04 16:56:38	1.645	2058-10-07 03:26:08	1.652
1925-01-02 08:03:39	0	1992-01-03 10:28:49	0	2059-01-05 08:01:19	0
1925-04-02 12:00:56	-1.683	1992-04-03 10:08:14	-1.652	2059-04-05 13:58:46	-1.641
1925-07-03 23:23:26	0	1992-07-03 22:33:03	0	2059-07-06 19:19:01	0
1925-10-05 02:42:45	1.690	1992-10-04 07:20:37	1.656	2059-10-06 07:13:14	1.639
1926-01-03 04:30:54	0	1993-01-02 14:24:41	0	2060-01-05 04:40:38	0
1926-04-03 02:05:06	-1.678	1993-04-02 12:54:04	-1.657	2060-04-04 21:28:14	-1.634
1926-07-04 17:41:21	0	1993-07-04 00:51:30	0	2060-07-05 18:49:53	0
1926-10-04 15:46:49	1.678	1993-10-04 22:30:24	1.668	2060-10-06 07:38:43	1.626
1927-01-03 18:31:38	0	1994-01-03 01:11:02	0	2061-01-03 22:19:22	0
1927-04-04 16:14:58	-1.672	1994-04-03 06:57:46	-1.660	2061-04-03 13:48:16	-1.629
1927-07-05 10:44:44	0	1994-07-04 07:38:19	0	2061-07-05 11:15:56	0
1927-10-05 21:36:41	1.665	1994-10-04 06:51:46	1.680	2061-10-05 18:35:28	1.627
1928-01-04 00:05:52	0	1995-01-03 12:31:15	0	2062-01-03 22:07:32	0
1928-04-02 19:54:48	-1.664	1995-04-04 05:26:24	-1.673	2062-04-04 13:10:21	-1.631
1928-07-04 17:54:33	0	1995-07-04 23:43:21	0	2062-07-05 11:21:17	0
1928-10-05 00:57:57	1.657	1995-10-06 03:59:34	1.689	2062-10-05 01:19:20	1.628
1929-01-03 04:37:07	0	1996-01-04 05:36:42	0	2063-01-03 19:37:46	0
1929-04-03 15:34:51	-1.649	1996-04-02 17:09:25	-1.674	2063-04-04 11:02:21	-1.639
1929-07-04 19:45:05	0	1996-07-04 10:15:45	0	2063-07-05 09:30:03	0
1929-10-04 05:25:41	1.641	1996-10-05 02:54:36	1.691	2063-10-06 04:59:21	1.641
1930-01-02 23:48:45	0	1997-01-03 22:08:11	0	2064-01-03 20:14:16	0
1930-04-03 17:30:57	-1.644	1997-04-04 12:00:31	-1.670	2064-04-02 12:17:20	-1.647
1930-07-04 19:08:26	0	1997-07-05 01:56:49	0	2064-07-04 06:52:47	0
1930-10-05 11:03:04	1.636	1997-10-05 06:26:33	1.681	2064-10-04 13:26:01	1.657
1931-01-02 23:02:22	0	1998-01-04 11:45:20	0	2065-01-03 04:20:43	0
1931-04-02 14:58:58	-1.647	1998-04-04 15:07:25	-1.665	2065-04-04 02:22:11	-1.653
1931-07-04 15:50:19	0	1998-07-05 22:13:03	0	2065-07-04 16:14:12	0
1931-10-04 20:01:19	1.642	1998-10-06 23:36:34	1.667	2065-10-04 19:06:49	1.663
1932-01-03 01:26:18	0	1999-01-04 23:17:42	0	2066-01-03 13:05:05	0
1932-04-02 20:08:10	-1.648	1999-04-04 15:57:59	-1.651	2066-04-03 19:11:04	-1.662
1932-07-03 11:55:24	0	1999-07-06 06:20:30	0	2066-07-05 04:06:46	0
1932-10-03 04:17:07	1.649	1999-10-05 23:59:27	1.653	2066-10-06 06:35:33	1.675
1933-01-01 23:17:57	0	2000-01-04 22:03:02	0	2067-01-04 04:10:37	0
1933-04-02 09:58:36	-1.656	2000-04-04 20:12:27	-1.643	2067-04-04 01:56:02	-1.670
1933-07-03 11:25:03	0	2000-07-05 10:50:54	0	2067-07-05 17:28:36	0
1933-10-04 12:27:41	1.663	2000-10-05 12:37:48	1.639	2067-10-05 18:34:21	1.680
1934-01-02 08:34:26	0	2001-01-03 17:47:44	0	2068-01-04 20:19:06	0
1934-04-02 01:49:49	-1.659	2001-04-03 15:13:23	-1.635	2068-04-04 16:19:47	-1.672
1934-07-03 17:06:54	0	2001-07-05 08:20:22	0	2068-07-05 09:44:28	0
1934-10-03 21:47:45	1.675	2001-10-05 23:36:40	1.629	2068-10-06 02:40:53	1.671
1935-01-02 20:06:42	0	2002-01-03 15:38:33	0	2069-01-04 08:18:26	0
1935-04-03 18:56:32	-1.666	2002-04-03 17:12:06	-1.630	2069-04-04 02:37:44	-1.666
1935-07-04 04:14:14	0	2002-07-05 03:04:15	0	2069-07-05 22:56:15	0
1935-10-04 15:57:54	1.684	2002-10-04 16:34:29	1.629	2069-10-06 11:21:14	1.663
1936-01-03 06:33:21	0	2003-01-03 10:55:11	0	2070-01-04 21:33:09	0
1936-04-02 03:15:41	-1.676	2003-04-04 09:16:50	-1.641	2070-04-05 12:15:54	-1.656
1936-07-03 15:34:08	0	2003-07-05 03:44:33	0	2070-07-06 14:42:11	0
1936-10-04 19:03:20	1.695	2003-10-05 15:46:43	1.635	2070-10-06 01:29:40	1.647
1937-01-03 02:16:24	0	2004-01-03 11:03:39	0	2071-01-04 23:38:57	0
1937-04-02 23:50:44	-1.673	2004-04-02 07:10:32	-1.646	2071-04-05 16:52:03	-1.648
1937-07-04 05:06:30	0	2004-07-03 22:54:22	0	2071-07-06 20:25:10	0
1937-10-04 07:46:58	1.688	2004-10-04 11:38:06	1.649	2071-10-07 08:44:19	1.636
1938-01-03 16:14:26	0	2005-01-02 14:18:33	0	2072-01-04 20:09:40	0
1938-04-04 06:25:13	-1.671	2005-04-03 02:53:59	-1.650	2072-04-03 12:46:26	-1.641
1938-07-05 00:02:00	0	2005-07-04 00:31:19	0	2072-07-05 14:43:26	0
1938-10-06 01:13:39	1.677	2005-10-03 19:33:53	1.660	2072-10-05 14:31:50	1.633
1939-01-04 05:40:56	0	2006-01-02 21:19:59	0	2073-01-03 19:52:46	0
1939-04-03 18:28:25	-1.665	2006-04-03 14:41:14	-1.661	2073-04-04 16:21:14	-1.636
1939-07-05 15:23:57	0	2006-07-04 13:46:03	0	2073-07-05 13:35:46	0
1939-10-05 23:50:22	1.666	2006-10-05 16:12:04	1.670	2073-10-05 04:06:01	1.626
1940-01-04 14:56:58	0	2007-01-03 11:05:52	0	2074-01-03 16:03:51	0
1940-04-04 06:36:00	-1.650	2007-04-03 03:38:06	-1.666	2074-04-04 03:37:08	-1.641
1940-07-04 23:29:24	0	2007-07-04 22:32:06	0	2074-07-05 10:56:58	0
1940-10-04 12:27:23	1.648	2007-10-05 07:25:41	1.681	2074-10-06 06:11:27	1.636
1941-01-03 09:17:16	0	2008-01-04 00:49:59	0	2075-01-03 17:58:12	0
1941-04-03 19:21:12	-1.642	2008-04-03 20:38:30	-1.672	2075-04-03 13:40:53	-1.649
1941-07-05 00:59:54	0	2008-07-04 12:30:55	0	2075-07-05 08:08:03	0
1941-10-05 18:19:11	1.637	2008-10-04 19:04:41	1.681	2075-10-05 07:02:03	1.652
1942-01-03 08:13:57	0	2009-01-03 15:21:35	0	2076-01-04 00:06:37	0
1942-04-02 23:12:42	-1.634	2009-04-03 16:57:40	-1.672	2076-04-04 00:49:32	-1.655
1942-07-04 22:44:18	0	2009-07-05 05:03:39	0	2076-07-04 11:12:36	0
1942-10-04 19:32:56	1.629	2009-10-06 06:20:25	1.671	2076-10-04 16:43:05	1.662
1943-01-03 05:39:08	0	2010-01-04 06:24:50	0	2077-01-03 05:36:21	0
1943-04-04 04:48:11	-1.634	2010-04-04 05:04:02	-1.662	2077-04-03 06:31:30	-1.662
1943-07-04 19:52:18	0	2010-07-05 18:02:20	0	2077-07-04 17:28:03	0
1943-10-04 14:52:27	1.629	2010-10-05 10:58:13	1.660	2077-10-05 18:43:43	1.679
1944-01-02 22:51:31	0	2011-01-04 12:45:41	0	2078-01-03 23:00:58	0
1944-04-02 04:13:35	-1.644	2011-04-05 12:14:30	-1.658	2078-04-04 01:26:53	-1.668
1944-07-03 14:57:19	0	2011-07-06 07:57:12	0	2078-07-05 08:03:37	0
1944-10-04 10:51:20	1.642	2011-10-06 14:31:13	1.647	2078-10-05 09:54:58	1.687
1945-01-02 02:22:23	0	2012-01-04 13:47:29	0	2079-01-04 15:19:26	0
1945-04-01 23:28:22	-1.646	2012-04-03 10:35:32	-1.647	2079-04-05 07:36:53	-1.674
1945-07-03 12:15:29	0	2012-07-05 07:09:12	0	2079-07-06 00:26:50	0
1945-10-03 08:04:52	1.651	2012-10-05 15:14:22	1.639	2079-10-07 02:51:19	1.688
1946-01-02 05:13:26	0	2013-01-03 11:47:35	0	2080-01-05 06:33:00	0
1946-04-03 06:57:22	-1.653	2013-04-03 21:23:49	-1.639	2080-04-03 17:48:48	-1.673
1946-07-03 18:41:21	0	2013-07-05 02:59:39	0	2080-07-05 12:55:58	0
1946-10-04 07:29:30	1.662	2013-10-04 14:21:32	1.633	2080-10-06 05:59:28	1.685
1947-01-02 13:26:32	0	2014-01-03 09:18:13	0	2081-01-05 01:07:50	0
1947-04-02 11:37:06	-1.666	2014-04-04 04:43:24	-1.642	2081-04-05 14:29:31	-1.663
1947-07-04 05:02:46	0	2014-07-05 05:03:17	0	2081-07-06 07:53:30	0
1947-10-05 01:31:32	1.678	2014-10-05 21:18:08	1.634	2081-10-06 05:28:14	1.665
1948-01-03 05:49:25	0	2015-01-03 09:51:59	0	2082-01-05 08:12:58	0
1948-04-02 14:08:16	-1.670	2015-04-03 04:02:41	-1.645	2082-04-05 16:04:55	-1.654
1948-07-03 14:53:54	0	2015-07-04 23:20:58	0	2082-07-06 21:17:07	0
1948-10-03 12:10:21	1.682	2015-10-05 05:30:16	1.647	2082-10-07 16:33:06	1.652
1949-01-02 16:58:35	0	2016-01-03 11:43:45	0	2083-01-05 11:54:14	0
1949-04-03 07:39:02	-1.675	2016-04-03 05:12:56	-1.652	2083-04-05 04:02:56	-1.644
1949-07-04 06:21:04	0	2016-07-03 22:11:16	0	2083-07-07 00:13:39	0
1949-10-05 09:47:40	1.681	2016-10-03 18:18:22	1.659	2083-10-06 19:22:08	1.642
1950-01-03 10:31:28	0	2017-01-02 16:36:30	0	2084-01-05 10:56:30	0
1950-04-03 00:03:31	-1.670	2017-04-03 03:47:44	-1.660	2084-04-05 07:54:52	-1.635
1950-07-04 23:22:00	0	2017-07-04 04:52:16	0	2084-07-05 23:26:58	0
1950-10-05 06:39:50	1.671	2017-10-05 07:49:14	1.670	2084-10-05 21:25:07	1.629
1951-01-04 00:16:15	0	2018-01-03 03:41:57	0	2085-01-04 04:10:13	0
1951-04-04 21:52:41	-1.662	2018-04-02 20:31:50	-1.664	2085-04-04 04:53:28	-1.633
1951-07-05 14:21:09	0	2018-07-04 12:04:05	0	2085-07-05 17:51:54	0
1951-10-05 07:30:48	1.656	2018-10-04 19:57:48	1.684	2085-10-06 12:28:17	1.631
1952-01-04 01:08:14	0	2019-01-03 18:43:00	0	2086-01-04 06:07:24	0
1952-04-03 08:39:25	-1.657	2019-04-04 15:23:17	-1.675	2086-04-04 04:38:18	-1.634
1952-07-04 21:05:17	0	2019-07-05 04:59:32	0	2086-07-05 16:46:07	0
1952-10-05 12:27:15	1.648	2019-10-05 19:46:20	1.690	2086-10-05 10:20:40	1.636
1953-01-03 03:24:17	0	2020-01-04 10:30:43	0	2087-01-04 06:45:47	0
1953-04-02 23:02:02	-1.644	2020-04-03 06:56:32	-1.678	2087-04-05 05:38:53	-1.641
1953-07-04 19:54:46	0	2020-07-04 18:33:26	0	2087-07-05 16:36:59	0
1953-10-04 09:57:07	1.635	2020-10-05 21:22:55	1.690	2087-10-06 03:26:37	1.646
1954-01-02 23:22:33	0	2021-01-04 04:21:12	0	2088-01-04 06:59:38	0
1954-04-04 01:37:40	-1.641	2021-04-04 04:23:05	-1.670	2088-04-03 02:19:53	-1.648
1954-07-04 19:02:17	0	2021-07-05 08:28:15	0	2088-07-04 15:56:35	0
1954-10-04 20:01:02	1.631	2021-10-05 08:06:29	1.681	2088-10-05 11:37:10	1.662
1955-01-02 20:23:42	0	2022-01-04 18:23:25	0	2089-01-03 18:05:04	0
1955-04-02 22:11:24	-1.648	2022-04-05 10:03:08	-1.665	2089-04-04 02:23:03	-1.650
1955-07-04 17:21:46	0	2022-07-06 05:57:41	0	2089-07-05 00:36:32	0
1955-10-05 07:46:23	1.640	2022-10-07 01:43:22	1.664	2089-10-04 22:24:46	1.668
1956-01-02 23:24:27	0	2023-01-05 03:00:09	0	2090-01-04 03:43:37	0
1956-04-02 04:39:16	-1.650	2023-04-04 17:21:58	-1.652	2090-04-04 18:42:33	-1.659
1956-07-03 12:16:10	0	2023-07-06 12:18:26	0	2090-07-05 14:32:24	0
1956-10-03 01:35:14	1.650	2023-10-06 17:24:52	1.653	2090-10-06 19:12:07	1.675
1957-01-01 23:21:06	0	2024-01-05 03:33:50	0	2091-01-04 17:48:52	0
1957-04-02 22:38:42	-1.658	2024-04-04 18:08:26	-1.641	2091-04-04 05:34:25	-1.666
1957-07-03 14:17:07	0	2024-07-05 13:24:52	0	2091-07-06 02:44:51	0
1957-10-04 07:22:27	1.662	2024-10-05 04:14:49	1.640	2091-10-06 15:55:53	1.680
1958-01-02 07:24:29	0	2025-01-03 23:38:25	0	2092-01-05 11:09:45	0
1958-04-02 03:06:59	-1.665	2025-04-04 08:10:35	-1.635	2092-04-05 03:34:46	-1.663
1958-07-03 22:11:41	0	2025-07-05 12:41:33	0	2092-07-05 18:09:24	0
1958-10-04 13:44:43	1.676	2025-10-06 09:34:06	1.631	2092-10-05 21:28:08	1.666
1959-01-02 22:00:54	0	2026-01-03 21:40:58	0	2093-01-04 20:10:39	0
1959-04-03 14:03:50	-1.670	2026-04-03 11:23:26	-1.631	2093-04-04 22:55:14	-1.657
1959-07-04 08:15:43	0	2026-07-05 06:13:58	0	2093-07-06 08:15:59	0
1959-10-04 06:50:30	1.686	2026-10-05 08:25:35	1.635	2093-10-07 05:54:22	1.656
1960-01-03 09:09:52	0	2027-01-03 20:51:11	0	2094-01-05 06:36:06	0
1960-04-02 19:56:06	-1.680	2027-04-04 17:06:27	-1.639	2094-04-05 04:06:56	-1.646
1960-07-03 22:21:43	0	2027-07-05 06:03:32	0	2094-07-06 20:24:49	0
1960-10-05 05:20:25	1.693	2027-10-05 05:38:55	1.643	2094-10-06 10:48:14	1.642
1961-01-03 04:43:39	0	2028-01-03 20:55:19	0	2095-01-05 07:26:59	0
1961-04-02 16:22:55	-1.677	2028-04-03 01:48:50	-1.646	2095-04-06 07:39:22	-1.638
1961-07-04 11:36:30	0	2028-07-04 04:26:10	0	2095-07-07 00:18:33	0
1961-10-04 19:56:45	1.688	2028-10-05 04:32:41	1.655	2095-10-07 01:16:09	1.629
1962-01-03 21:06:09	0	2029-01-03 02:04:26	0	2096-01-05 00:18:44	0
1962-04-04 17:35:01	-1.672	2029-04-02 20:25:08	-1.648	2096-04-03 22:17:02	-1.634
1962-07-05 06:01:36	0	2029-07-04 05:32:31	0	2096-07-05 18:36:23	0
1962-10-05 14:01:11	1.675	2029-10-04 09:02:10	1.669	2096-10-06 06:16:16	1.627
1963-01-04 07:53:18	0	2030-01-03 12:21:14	0	2097-01-03 23:41:28	0
1963-04-04 06:15:32	-1.667	2030-04-04 09:05:11	-1.657	2097-04-04 05:18:24	-1.631
1963-07-05 21:22:14	0	2030-07-04 21:03:31	0	2097-07-05 15:24:00	0
1963-10-06 14:48:24	1.665	2030-10-05 16:08:53	1.675	2097-10-05 02:24:15	1.623
1964-01-04 16:36:15	0	2031-01-04 01:10:37	0	2098-01-03 20:37:22	0
1964-04-03 17:02:34	-1.651	2031-04-03 18:43:42	-1.663	2098-04-04 19:33:25	-1.637
1964-07-05 01:02:19	0	2031-07-05 07:53:28	0	2098-07-05 14:55:39	0
1964-10-04 13:20:45	1.650	2031-10-06 07:15:28	1.684	2098-10-06 04:04:34	1.631
1965-01-03 12:42:24	0	2032-01-04 16:31:18	0	2099-01-03 19:16:05	0
1965-04-04 08:32:28	-1.643	2032-04-03 20:20:45	-1.665	2099-04-03 15:56:48	-1.649
1965-07-05 02:06:12	0	2032-07-04 20:47:11	0	2099-07-05 12:58:47	0
1965-10-05 13:55:14	1.639	2032-10-04 22:54:24	1.680	2099-10-05 23:13:36	1.649
1966-01-03 10:48:06	0	2033-01-04 06:11:33	0	2100-01-04 02:59:31	0
1966-04-03 03:04:20	-1.638	2033-04-04 16:23:51	-1.663	2100-04-04 20:42:52	-1.653
1966-07-05 00:38:12	0	2033-07-05 15:40:16	0	2100-07-05 15:08:46	0
1966-10-05 12:10:02	1.636	2033-10-06 18:19:36	1.665	2100-10-05 07:46:30	1.659

The table shows the UTC time when TT - TDB reaches a local maximum and minimum and when TT = TDB (the formal uncertainty on the UTC time is less than 1 s).