iOS: won't join experiment if end date = today

We created an experiment intended to last one day and fire one ping at noon.
When trying to invite participants the day of, they couldn't see it in their experiments list if the end day was today.

We suspect the logic for experiment join is checking to see if now > 12:00AM and not 11:59:59PM of the end date. We expected the latter (so you could join an experiment already in progress).