The PDJULG
w. informat reads IBM packed Julian date values
in the form of
yyyydddF:
is the two-byte representation
of the four-digit Gregorian year.
is the one-and-a-half
byte representation of the three-digit integer that corresponds to
the Julian day of the year, 1–365 (or 1–366 for leap
years).
is the half byte that
contains all binary 1s, which assigns the value as positive.
Note: SAS
interprets a two-digit year as belonging to the 100-year span that
is defined by the YEARCUTOFF= system option.