My thoughts, openings are being missed because people are not monitoring.
I wonder if this one would be missed if there wasn't a contest on?
I was alerted because I check dxmaps.com several times a day. I set the search parameters for E-skip for the U.S.A. Right now it shows E-skip at 78 mhz muf over DM43. I don't hear anything now on 10 meters over my area, EM79. The great thing about DXmaps, you can set it up for any parameter you like, frequency, mode, area, region and so on.
I'm sure the earlier California and the recent Brazil station was F2, not E-Skip. But Brazil was there around the same time as Vermont station was, so it was a mixed mode...F2 and Sporadic E-Skip happening at the same time. There is still some F2 kicking around yet, not like it was a few years ago...
Regardless, even though we are in a decline of the cycle, that doesn't affect sporadic E-Skip. December - early January is usually when the lesser E-Skip openings happen with May - August being the primary period. It's worth checking just for the possibility of the sporadic E-Skip. And E-Skip can happen well into the evenings during the primary period of May and August. I would suggest checking again tomorrow.