[1] RFC 2204 - ODETTE File Transfer Protocol, , https://tools.ietf.org/html/rfc2204#appendix-B
[3] Time stamp, Date stamp
[6] ともに ISO 8601のプロファイル >>5, >>7
The Date attribute represents the decade and year in a two digit field. Since the ODETTE-FTP only uses this information to identify a particular Virtual File it will continue to operate correctly in the year 2000 and beyond.