General Assembly / IAU Service / United Kingdom Hydrographic Office / U.S. Securities and Exchange Commission / International Earth Rotation Service / Her Majesty’s Nautical Almanac Office / SOFA Center / /
Person
Earth / DAT DTDB / TAI TT / Julian Day / Venus Star / Toshio Fukushima / Julian Dates / P. Kenneth Seidelmann / Sean E. Urban / Julian Epoch Julian Epoch / /