You can use *service to retrieve it from a site like http://worldclockapi.com/api/json/utc/now.
Here is how you would do it. In your program, use this code:
>>out_UTCtime = it["currentDateTime"]
>>out_UTCtime = ""
and then you need to go to your program settings to configure the service:
1) On Settings>Services, click on "New service"
2) Fill the "Name" field with utc, and the "URL" field withhttp://worldclockapi.com/api/json/utc/now, leaving all the other fields blank
3) Click Save and the program is ready to run!