インテル® Fortran コンパイラー 14.0 ユーザー・リファレンス・ガイド
Portability Function: Returns a 10-character string with the Julian date in the form "yyyyddd". Three spaces terminate this string.
The result type is character with length 10. The result is the Julian date, in the form YYYYDDD, followed by three spaces.
The Julian date is a seven-digit number whose first four digits are the year, and whose final three represent the day of the year (1 for January 1, 366 for December 31 of a leap year, and so on). For example, the Julian date for February 1, 1999 is 1999032.