rows 23624 first (1962, 1, 1) last (2026, 9, 5)

# year  mean_excess_LOD_ms  days_LOD<0  n_days  accumulated_s(sum LOD)
1972 3.125 0 366 1.144
1976 2.901 0 366 1.062
1980 2.299 0 366 0.841
1984 1.521 0 366 0.557
1988 1.312 4 366 0.48
1992 2.219 0 366 0.812
1996 1.821 0 366 0.666
2000 0.717 29 366 0.263
2004 0.312 103 366 0.114
2008 0.873 15 366 0.32
2010 0.698 53 365 0.255
2011 0.762 31 365 0.278
2012 0.831 22 366 0.304
2013 1.025 9 365 0.374
2014 0.994 0 365 0.363
2015 1.255 0 365 0.458
2016 1.341 2 366 0.491
2017 1.027 0 365 0.375
2018 0.692 29 365 0.252
2019 0.387 96 365 0.141
2020 -0.004 168 366 -0.001
2021 -0.179 230 365 -0.065
2022 -0.249 239 365 -0.091
2023 -0.079 208 365 -0.029
2024 -0.103 207 366 -0.038
2025 -0.077 203 365 -0.028
2026 0.295 66 248 0.073

# ten shortest days (excess LOD, ms)
2024-07-05 -1.6508
2024-07-06 -1.6238
2022-06-29 -1.5972
2022-06-30 -1.5783
2022-06-28 -1.5603
2024-07-04 -1.5138
2024-07-07 -1.5031
2022-07-01 -1.4763
2022-07-27 -1.4738
2021-07-09 -1.4521

# years with negative annual mean excess LOD: [2020, 2021, 2022, 2023, 2024, 2025]

# UT1-UTC on 1 Jan / 1 Jul since 2016-12-31
2016-12-31 -0.4078
2017-01-01 +0.5913
2017-07-01 +0.3595
2018-01-01 +0.2164
2018-07-01 +0.0706
2019-01-01 -0.0362
2019-07-01 -0.1742
2020-01-01 -0.1772
2020-07-01 -0.2401
2021-01-01 -0.1754
2021-07-01 -0.1674
2022-01-01 -0.1105
2022-07-01 -0.0687
2023-01-01 -0.0198
2023-07-01 -0.0361
2024-01-01 +0.0088
2024-07-01 -0.0039
2025-01-01 +0.0463
2025-07-01 +0.0434
2026-01-01 +0.0741
2026-07-01 +0.0145
last row: 2026-09-05 UT1-UTC +0.0009830
minimum UT1-UTC since 2017-01-01: 2020-06-05 -0.2562

# leap-second table rows 28 first (1972, 1, 1, 10) last (2017, 1, 1, 37)
longest gap in table: 2557 days, (1999, 1, 1) -> (2006, 1, 1)
gap since last entry to 2026-10-05 (MJD 61318): 3564 days

# Jan 1 - Sep 5 mean excess LOD (ms), days LOD<0, and UT1-UTC change over the window (s)
2016 1.337 2 249 -0.3316
2017 1.035 0 248 -0.2559
2018 0.622 29 248 -0.1539
2019 0.483 62 248 -0.1194
2020 0.021 103 249 -0.0053
2021 -0.244 164 248 +0.0599
2022 -0.4 185 248 +0.0988
2023 -0.089 143 248 +0.0220
2024 -0.181 150 249 +0.0449
2025 -0.171 156 248 +0.0420
2026 0.295 66 248 -0.0731

# shortest day per year (ms)
2020-07-19 -1.4504
2021-07-09 -1.4521
2022-06-29 -1.5972
2023-07-16 -1.3057
2024-07-05 -1.6508
2025-07-09 -1.3684
2026-07-27 -0.6696

max UT1-UTC since 2023: 2025-10-17 +0.0948
2025-09-05 UT1-UTC: +0.0883