by Adam Barbary.
That's an interesting request. I know it can be set to be 00:00 hours, so that is midnight.
In my experience this is likely to be an issue, given that most institutions do not have support available at this time of the day. I always suggest that business hours is a far better time, just in case your users need support when submitting.
Of course, that's just my opinion. I'd like to hear others.
Adam