You must execute your trade by the close on Tuesday, Nov 27 to be eligible for the payout in December.  Anyone executing a trade on or after Weds, Nov 28 will not receive the Dec dividend as on Nov 28 PLT trades without rights to the Dec dividend, i.e., it trades ex-div:


"The Trust also confirms that its cash distribution to be paid on December 21, 2012, in respect of the period from and including November 1, 2012 to November 30, 2012, to unitholders of record on November 30, 2012 will be $0.08 per trust unit. The ex-distribution date is November 28, 2012."