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.