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A general domain that defines a Gregorian format as YYYYMMDD. YYYY is composed first two positions with Century_Number (CC) with values 00-99, and the last two positions (YY) reserved for Year_Code with values 00-99; MM is reserved for Month_Code with values 01-12; and DD is restricted to Day_Calendar_Code with values 01-31. Authoritative source: ISO 8601. |