[amibroker] First and Last Trading Day in Month

["Patrick" <patsgreatdeals@xxxxxxxxx>]

I want to testing buying and selling based on months. Using the very simple forumla below will not work (month end mainly) if there is no trading day on the 28th. 

Is there a way to write to code... "Buy on the first trading day of the month, and sell on the last trading day of the month" ??


MO = 1;
Buy = (Month() == MO) AND(Day() = 1 );
Sell = (Month() == MO) AND (Day() = 28);




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