How do I get the date a trade was opened?

As part of an EA I am working on I would like to be able to count how many of the currently opened orders were opened on the same day. However, I'm not sure how to get the opened date for an order. Is there a way to do this?

Thanks

Select the order using OrderSelect then read the date with OrderOpenTime. The orderopentime contains both the time and date when the order was opened.