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