1. The date by which a payment, obligation, or deadline should have been completed but has not been
The overdue date for the invoice was March 15th, but payment was not received until April 2nd.
A data de vencimento da fatura era 15 de março, mas o pagamento não foi recebido até 2 de abril.
2. The deadline that has already passed without the required action being taken
The library book has passed its overdue date by two weeks.
O livro da biblioteca passou sua data de vencimento em duas semanas.