Hi Amber,
I just went into Applied Systems' subscription, confirmed that my user time preference was set to Central time (Chicago) and wasn't able to reproduce this issue.
Here's what I see when I set up a test event:
![0EM50000000Q8jI.jpg 0EM50000000Q8jI.jpg](/t5/image/serverpage/image-id/12451i5DCDBAADCCA9E483/image-size/large?v=v2&px=999)
Here's what I see when I try to schedule a test campaign (run once, as well as schedule recurrence):
![0EM50000000Q8jN.jpg 0EM50000000Q8jN.jpg](/t5/image/serverpage/image-id/12479i68E325C6C58993F7/image-size/large?v=v2&px=999)
![0EM50000000Q8jS.jpg 0EM50000000Q8jS.jpg](/t5/image/serverpage/image-id/12487i20126CE9EE301608/image-size/large?v=v2&px=999)
The time zone for scheduling events/campaigns is based on your personal time zone preference (not the time zone setting for the Marketo instance). Can you please send a few more details/screenshots?
Thanks,
Ei-Mang