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ISO 31-1 is the part of international standard ISO 31 that defines names and symbols for quantities and units related to space and time. It was superseded in 2006 by ISO 80000-3.
Its definitions include:
Annex A of ISO 31-1 lists units of space and time based on the foot, pound, and second.
Annex B lists some other non-SI units of space and time, namely the gon, light year, astronomical unit, parsec, tropical year, and gal.
Iso/iec 80000, Si, Prolog, Space, Time
Germany, Deutsches Institut für Normung, Berlin, Iso 15924, Prolog
Gregorian calendar, Julian calendar, Second, Berlin, Daylight saving time
Astronomy, Geology, Megaannum, Unit of measurement, Calendar era
%s%s, International System of Units, Si, Measurement, Decibel