I’m also having events show up on the grid view a day late. I suspect a timezone issue, because the times listed for the event are incorrect (don’t match the google calendar event). I’ve tried setting both Default timezone and also my local zone (Eastern). No success. (Yes, this was a Google Calendar Events upgrade.)
Importantly, the Preview display in the calendar editor is correct, but the one displayed on the actual website is not. I’ve cleared cache, but no success.
This is causing real chaos, so any help would be most appreciated!
Update: My situation was complicated by another WordPress cache. I cleared that, and now the website matches the preview.
My event times and dates are now showing correct. I suspect what fixed the problem was going to Calendar advanced settings, changing the time zone to my local, then change it back to default. Hope this helps others!