The United States Naval Observatory (USNO) and the National Institute of Standards and Technology (NIST) make regular comparisons of their respective time scales. These comparisons are made using GPS common-view measurements from up to approximately 10 GPS satellites. The table below lists recent differences between the two time scales.
Date | MJD | UTC(USNO) - UTC(NIST) (+/- 5 ns) |
---|---|---|
2024-06-28 | 60489 | 1.9 ns |
2024-06-23 | 60484 | 1.0 ns |
2024-06-18 | 60479 | 1.1 ns |
2024-06-13 | 60474 | 1.6 ns |
2024-06-08 | 60469 | 1.5 ns |
2024-06-03 | 60464 | 0.6 ns |
2024-05-29 | 60459 | 0.7 ns |
2024-05-24 | 60454 | 0.7 ns |
2024-05-19 | 60449 | 1.3 ns |
2024-05-14 | 60444 | 1.0 ns |
2024-05-09 | 60439 | 0.7 ns |
2024-05-04 | 60434 | 0.2 ns |
2024-04-29 | 60429 | -0.6 ns |
2024-04-24 | 60424 | -0.3 ns |
2024-04-19 | 60419 | -1.0 ns |
2024-04-14 | 60414 | 2.3 ns |
2024-04-09 | 60409 | 3.2 ns |
2024-04-04 | 60404 | 3.4 ns |
2024-03-30 | 60399 | 0.9 ns |
2024-03-25 | 60394 | -1.1 ns |
2024-03-20 | 60389 | -0.9 ns |
2024-03-15 | 60384 | 0.4 ns |
2024-03-10 | 60379 | 0.8 ns |
2024-03-05 | 60374 | 0.7 ns |
2024-02-29 | 60369 | -0.5 ns |
2024-02-24 | 60364 | -0.1 ns |
2024-02-19 | 60359 | 0 ns |
2024-02-14 | 60354 | -0.5 ns |
2024-02-09 | 60349 | -1.1 ns |
2024-02-04 | 60344 | -1.7 ns |
2024-01-30 | 60339 | -1.2 ns |
2024-01-25 | 60334 | -1.7 ns |
2024-01-20 | 60329 | -1.0 ns |
2024-01-15 | 60324 | -2.6 ns |
2024-01-10 | 60319 | -1.4 ns |
2024-01-05 | 60314 | -0.3 ns |