Input
 utc
    Relative binary timestamp.
    Output
 timetm
    Relative time component of the relative binary timestamp. The
    field tm_mday returns a value of -1 and the fields tm_year and
    tm_mon return values of zero. The field tm_yday contains the
    number of days of relative time.
 tns
    Nanoseconds since time component of the relative binary
    timestamp.
 inacctm
    Seconds of inaccuracy component of the relative binary timestamp.
    If the inaccuracy is finite, then tm_mday returns a value of -1
    and tm_mon and tm_year return values of zero. The field tm_yday
    contains the inaccuracy in days. If the inaccuracy is infinite,
    all tm structure fields return values of -1.
 ins
    Nanoseconds of inaccuracy component of the relative binary
    timestamp.