Days 3 and 4
Wednesday we received 35 valid submissions; Thursday "only" 23, which would still be enough to make it the fourth-highest-volume day ever if not for Monday through Wednesday of this week.
So as of the end of Thursday, we'd received 131 valid subs, 10 more than the previous highest-volume week (and nearly twice the number we get in an ordinary week these days). And there are still two days left in the week. I'm guessing we'll hit 175 by the end of the week, and at least 425 by the end of the month. But those are just guesses.