Each podcast that you work on within Captivate can have is own timezone set within "Show Settings".
This ensures that scheduled episodes can be managed in local time and that your podcast analytics are relative to the location that you're in.
To change your podcast's timezone and/or add a timezone setting if you have imported a podcast from another podcast host:
Choose the relevant show from My Shows
Click Edit Show Settings
Set the default timezone under Podcast Directory Appearance
Save your settings
You're all set!
Note: Your podcast download analytics will also be displayed in the same timezone in which your episodes are published. Awesome!