Functions

date = date-text / DQUOTE date-text DQUOTE

date-day = 1*2DIGIT

date-day-fixed = (SP DIGIT) / 2DIGIT

date-month = "Jan" / "Feb" / "Mar" / "Apr" / "May" / "Jun" / "Jul" / "Aug" / "Sep" / "Oct" / "Nov" / "Dec"

date-text = date-day "-" date-month "-" date-year

date-time = DQUOTE date-day-fixed "-" date-month "-" date-year SP time SP zone DQUOTE

date-year = 4DIGIT

time = 2DIGIT ":" 2DIGIT ":" 2DIGIT

zone = ("+" / "-") 4DIGIT