                 <p:column headerText="Date/Time" 
                                  sortBy="#{d.bill.createdAt}">
                            <f:facet name="header">
                                <h:outputLabel value="Date/Time"/>
                            </f:facet>
                            <h:outputLabel value="#{d.bill.createdAt}">
                                <f:convertDateTime pattern="yyyy MMM dd hh:mm a" ></f:convertDateTime>
                            </h:outputLabel>
                   