[American Constitutionalist]

" You simply can’t say with certainty that the hospital registrar signed all of the certs on the same day. That doesn’t even make sense from a logistical perspective."

Unless that had to be at the health department on a certain date the following week, i.e. on a Friday, registered , and signed, and ready to send.
If you own a business, and want a check from a creditee ( is that a word ? )i.e. a check from a customer ) anyway, to show up on your business account , in some banks you have to get it in at a certain time of that day for it to be credited for the following day.

[Danae]

The time limit was 7 days.