This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Deviation of day length from SI day.svg en Deviation of day length from SIbased day ' daily moving day average and cumulative For comparison displays UTC leap seconds own data IERS obspm fr now File Abweichung der Tageslnge vom SITag svg German with Perl script to generate it from data Time diagrams