This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
It doesn't look like it (at least not up to 2.0). You can download the 2.1 specs and check out the EJB-QL EBNF to see for yourself. 2.0 wants scalar values, or functions that produce scalar values to do what you want -- not dates.