icu4c/source/data/unit/tt.txt

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html#License
tt{
    Version{"2.1.44.88"}
    durationUnits{
        hm{"h:mm"}
        hms{"h:mm:ss"}
        ms{"m:ss"}
    }
}