Left Select: as, d, fs, h, us, ms, min, ns, ps, s, y,
Right Select: as, d, fs, h, us, ms, min, ns, ps, s, y,
Left Select: attosecond [as], century, day [d], day (sidereal), decade, femtosecond [fs], fortnight, hour [h], hour (sidereal), microsecond [us], millennium, millisecond [ms], minute [min], minute (sidereal), month, month (synodic), nanosecond [ns], novennial, octennial, picosecond [ps], Planck time, quindecennial, quinquennial, second [s], second (sidereal), septennial, shake, week, year [y], year (Julian), year (leap), year (sidereal), year (tropical),
Right Select: attosecond [as], century, day [d], day (sidereal), decade, femtosecond [fs], fortnight, hour [h], hour (sidereal), microsecond [us], millennium, millisecond [ms], minute [min], minute (sidereal), month, month (synodic), nanosecond [ns], novennial, octennial, picosecond [ps], Planck time, quindecennial, quinquennial, second [s], second (sidereal), septennial, shake, week, year [y], year (Julian), year (leap), year (sidereal), year (tropical),
