The Dynamic Modal Plugin is A wordpress plugin, mainly for eCommerce websites. It's A modal popup that changes theme and contents based on time zone. This can be added to any WordPress page via shortcode.
This modal was designed using this modal generator and this gradient background generator. I used javascript to grab the users system time and it outputs a pre-designed modal based on what their local time is.
To begin, download this repo as a .zip, and do NOT extract. Then go to your wordpress admin dashboard, click add plugin, upload, and drag the .zip file to the uploader.
This plugin can go on any wordpress webpage, and only triggers once. It uses a shortcode. To add, click on "Add Block" (+) button in the editor, search for 'shortcode' and click to add. In the shortcode block, type in [modal] (Be sure to include brackets). This will not add anything to the page, it will just trigger the modal popup.
As of now, there are no server-side options for customizing the modal. Development for that is currently in progress and will release in V2