I would have them for lunch at the latest. If they still smell good and keep them refrigerated until then. If you then have a second meals volume then try again tonight.
Either way I would not feed my elderley parents with them as it may need a stronger constitution if they have started to turn.
Also look out for ill effects after the first sitting.
You could test a sample on the cat. If the cat turns it's nose up then use them for crab bait next time
Cheers
Chris