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External Data Source

Source

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