The 9PM prizes are actually sent out at 7PM. There is a typo on the calendar that has yet to be fixed.
As stated previously by another user, the correct times are as follows : 9 AM PT / 12PM (NOON) ET (09:00 Server Time) 4PM PT / 7PM ET (16:00 Server Time) 7PM PT / 10PM ET (19:00 Server Time) * You can check the server time by navigating the top of the website under the "Support" column as shown below. Previously, this event was scheduled for 9PM but has since been changed to 7PM to accommodate other players on different time zones. The correct time will be adjusted and reflected as soon as possible to prevent further confusion. Based on previous regulations on this event, compensation will only be considered.
