Okay, so I did some more testing.
Event Date: December 19 – 6pm-11pm HST
OLD iCal.php:
Google Export: December 20, 4am-9am
iCal Export: Dec 20, 2pm-7pm
NEW:
Google Export: 12/20 4a-9a
iCal Export: 12/20 4a-9a
With that, I tried setting the Timezone Mode to Use Local Timezones for Each Event. And that worked.