Welcome to the Zoom Community, @Trias.

Where are you seeing the incorrect time?

I am in the Arizona Time Zone.  If I schedule a meeting using the Eastern Time Zone as the basis, the Eastern Time shows in the webinar editing screens, but the time zone shown on the Registration Page is modified to show the time zone in the registrant's time zone (as determined by their device time zone settings).

Example

I scheduled a test webinar for 5pm Eastern:

After saving the created webinar, looking at the information on my Webinars page, it shows Eastern time, as used in the registration setup:

When I copy the registration link and navigate to it in my browser, it shows my local time:

On completing the registration form, I get this, also in my local time zone:

And the email sent has the correct offset to show the event in my local time zone:

If your experience is different than this, I'd need screen shots to show me where the time is different.  The time is shown in lots of places... and I might have missed one.  But the system is designed to show the time in adjusted for the time zone of the device on which it is being viewed.

How are you “getting into other regions“?  The page is designed to get the time zone of your device and display the time in that time zone.