El primer pedido: The first order.
El tercer lote: The third lot.
El postrer envío: The last shipment.
But—
La primera entrega (fem.): The first delivery.
[Footnote 64: Eight words in all present this peculiarity, viz., uno, alguno, ninguno, bueno, malo, primero, tercero, postrero (these last two not always).]
After "vigésimo" ordinal numbers are generally substituted by cardinal numbers, as—
La página veintidós: Page 22nd.
Dates are expressed by cardinal numbers instead of ordinal, as—
Madrid, 20 (de) Agosto (de) 1911: Madrid, 20th of August, 1911.
EXCEPTION: El primero, as—
El 1° (primero) de Septiembre (1st September).