date-time = [ day-of-week "," ] date time
day-of-week = "Monday" / "Mon" / "Tuesday" / "Tue"
/ "Wednesday" / "Wed" / "Thursday" / "Thu"
/ "Friday" / "Fri" / "Saturday" / "Sat"
/ "Sunday" / "Sun"
date = 1*2DIGIT ["-"] month ; day month year
["-"] (2DIGIT /4DIGIT) ; e.g. 20 Aug [19]77
month = "January" / "Jan" / "February" / "Feb"
/ "March" / "Mar" / "April" / "Apr"
/ "May" / "June" / "Jun"
/ "July" / "Jul" / "August" / "Aug"
/ "September" / "Sep" / "October" / "Oct"
/ "November" / "Nov" / "December" / "Dec"
time = hour zone ; ANSI and Military
; (seconds optional)
hour = 2DIGIT [":"] 2DIGIT [ [":"] 2DIGIT ]
; 0000[00] - 2359[59]
zone = ( ["-"] ( "GMT" ; Relative to GMT:
; North American
/ "NST" / ; Newfoundland:-3:30
/ "AST" / "ADT" ; Atlantic: - 4/ - 3
/ "EST" / "EDT" ; Eastern: - 5/ - 4
/ "CST" / "CDT" ; Central: - 6/ - 5
/ "MST" / "MDT" ; Mountain: - 7/ - 6
/ "PST" / "PDT" ; Pacific: - 8/ - 7
/ "YST" / "YDT" ; Yukon: - 9/ - 8
/ "HST" / "HDT" ; Haw/Ala -10/ - 9
/ "BST" / "BDT" ; Bering: -11/ -10
1ALPHA )) ; Military: Z = GMT;
; A:-1; (J not used)
; M:-12; N:+1; Y:+12
/ ( ("+" / "-") 4DIGIT ) ; Local differential
; hours/min. (HHMM)If included, day-of-week must be the day implied by the date specification.
day-of-week を含める場合は、日付詳説に含まれた曜日でなければなりません。
Time zone may be indicated in several ways. The military standard uses a single character for each zone. "Z" is Greenwhich Mean Time; "A" indicates one hour earlier, and "M" indicates 12 hours earlier; "N" is one hour later, and "Y" is 12 hours later. The letter "J" is not used. The other remaining two forms are taken from ANSI standard X3.51-1975. One allows explicit indication of the amount of offset from GMT; the other uses common 3-character strings for indicating time zones in North America.
時間帯は幾つかの方法で示して構いません。軍規格は各帯に一文字を使っています。 "Z" がグリニッジ標準時で、 "A" は1時間早いことを示し、 "M" は12時間早いことを示します。 "N" は1時間遅いことを、 "Y" は12時間遅いことを示します。文字 "J" は使いません。 他の2つの形式は ANSI 規格 X3.51-1975 から取りました。 1つは GMT からの差の量を明示するものです。もう一つは 北米の時間帯を示す共通の3文字の文字列を使います。