For Rex clients outside of the US you can update the way dates are displayed on your page.
Overview
By default dates are displayed as Month-Day-Year (MM/DD/YYYY). This can be changed to Day-Month-Year (DD/MM/YYYY).
How to Switch your Date Formatting
Your date formatting can be updated in the Settings page. Click on the "Global" tab and on the right side of the screen locate the dropdown titled "Date Format."
Settings -> Global -> Date Format
Simply select the format you want to have, and your date format will be updated across all locations.