Events incorrectly spanning 2 days

So this is strange. I have 5 calendars created in wordpress; I’m importing 4 from Google and the final one is Grouped to show them all in wordpress. 3 of the 4 google calendars have ALL their events spanning 2 days on the wordpress site, but each only span 1 day on Google’s calendar page.

I’ve done a detailed side-by-side comparison of ALL settings, BOTH on the google site and on the wordpress backend. They are all setup identically, but yet… the events from 3 of the 4 google calendars are showing up incorrectly.

Additional important note: on wordpress the hover tooltip reads “January 9, 2017 – January 8, 2017” for an event scheduled for the 9th. You’ll notice this is BACKWARDS!

Please let me know how I can help further troubleshoot. Yes, all timezones are GMT-5 (New York); WordPress settings and each calendar in Google are the same timezone.