Well most MMORPGS restricted mods from being able to gather data from outside world, so you couldnt stream information from a web-service etc..
However it is possible to output data directly to the local-machine and have a seperate application manipulate that.
I know this, because I did the exact thing for WoW
It outputted all the calender information to the Local-drive, using a mini-application running in the background it would upload the info to a website, which would then display the up-to-date information.
So its something I could potentially build, but I think you'll find that other people with more time on there hands, will build something very similar soon
Envicta