Excess Length of Day, Daily, 1962 to 2025
cra:lod-daily-1962-202523,136 records4 columnsv1.0 · issued 2026-07-21
01Description
The excess length of day series at daily resolution, extracted from the IERS EOP 20 C04 combined solution, with UT1-UTC retained for integration checks. Length of day is the most direct observable of angular momentum exchange between the solid Earth, the fluid envelopes, and the core.
02Package Contents
| Data file (CSV) | The cleaned series, one record per row |
| README.md | Source, terms, exact cleaning steps, column definitions, limitations, citation |
| Preparation script | Reproduces the CSV mechanically from the named source file(s) |
| CHECKSUMS.txt | SHA-256 for every file in the package |
Dataset Recordcra:lod-daily-1962-2025
Series
Earth Orientation
Coverage
1962-01-01 to 2025-05-05 (snapshot at issue)
Resolution
Daily (0h UTC)
Extent
23,136 records × 4 columns
Version
v1.0 · issued 2026-07-21
Source
IERS EOP 20 C04 (ITRF 2020)
Package
cra_lod_daily_1962_2025_v1.0.zip · 303 KB
Data file SHA-256
fb79d49aa3055a31fac7e241bd0825c70ea90b1b74fb8b42fa5ec3f870e46591
03Delivery
Resolving member access.