Using Digital Signage to display Clocks from different time zones.

[HannibalG]

Hello All, 

We are trying to configure the Zoom Room digital signage for a User who would like 4 different Clocks to display the time for 4 different Time Zones. We have tried using an internal URL to link to a small website that have the clocks displayed. But we get an Error when trying to use (Websites that were outside of our network seem to work) The URL that we are using is the IP followed by the Port number. It isnt an HTTPS address so we arent sure if thats why. 

Any ideas or a better way of setting something like this up? App, widgets, etc. 

Thanks.