https://www.epo.org/en/service-support/faq/myepo-services/central-fee-payment/preparing-bank-transfers/what-will-be-0

What will be the payment date for a SEPA instant credit transfer?

The payment date, or booking date, is the date that your payment is received in the EPO bank account. 

If an instant SEPA transfer is made during banking hours, the payment will be received in the EPO bank account on the same day. The receipt, or booking date, in the EPO bank account may be delayed if the payment is made outside banking hours, in line with the “Verfahrensregeln SEPA-Echtzeitüberweisungen für sonstige Kontoinhaber ohne BLZ” of the Deutsche Bundesbank Eurosystem.

Applicants and representatives are advised to ensure that payments to the EPO are made in time so that they are received in the EPO bank account at the latest on the final due date.