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2.1.3.2.1.10 Recurrence Part: UNTIL

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RFC Reference: [RFC2445] section 4.3.10

Number of Instances Allowed: 0, 1

Format: Date-Time ([RFC2445] section 4.3.5)

Brief Description: Specifies the time of the last instance of a recurring appointment (inclusive).

The UNTIL recurrence part MUST be a Date-Time occurring after the DTSTART property. The UNTIL recurrence part MUST NOT be specified in conjunction with the COUNT recurrence part. If neither an UNTIL nor a COUNT is specified, the recurrence MUST be treated as infinitely recurring. If the last instance of a recurring appointment would occur on or after January 1, 4501 in the time zone specified by PidLidTimeZoneStruct, the recurrence SHOULD<267> be treated as infinitely recurring.