datatype:UTC-DAYTIME

UTC day time is expressed as "YYYY-DDDThh:mm:ss.ddZ", where each character is an ASCII character using one octet with the following meanings: YYYY = Year in four-character subfield with values 0001-9999, DDD = Day of year in three-character subfield with values 001-365 or -366, T = Calendar-Time separator, hh = Hour in two-character subfield with values 00-23, mm = Minute in two-character subfield with values 00-59, ss = Second in two-character subfield with values 00-59 (-58 or -60 during leap seconds), dd = Decimal fraction of second in one- to n-character subfield, each d has values 0-9, and Z = time code terminator (optional)"