String DATE_RULE = "^((\\d{2}(([02468][048])|([13579][26]))[\\-\\-\\s]?((((0?" + "[13578])|(1[02]))[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))" + "|(((0?[469])|(11))[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(30)))|" + "(0?2[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][12" + "35679])|([13579][01345789]))[\\-\\-\\s]?((((0?[13578])|(1[02]))" + "[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))" + "[\\-\\-\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\-\\s]?((0?[" + "1-9])|(1[0-9])|(2[0-8]))))))";

"^((\\d{2}(([02468][048])|([13579][26]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\\s((([0-1][0-9])|(2?[0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$";