0 in a way that happens, is done, or exists at the same time:
Records should be updated at most within 24 hours of the consultation, if not contemporaneously.
The investigation into the cause of the fire went on contemporaneously with the efforts to fight it.
The card debits your account, with the transfers occurring contemporaneously with the customer's purchases.
Feedback can be written to a text file, which can be sent contemporaneously via email.
It was the decided that the subway and the additional highways would be built contemporaneously.