Hi,
I had an event publish this morning. I happen to add a photo page this evening and when verifying it, I saw the new date/time at the top of the listing. It had the right date, but the time as defaulted to 00:00 - 13:00 . Glad I noticed the new fields when I edited it again, so was easy to correct. And no, the event was not from midnight to 1PM.
Good feature, but you might want to take a look a any caches that published in today.
Cheers,
-TG