Synchronizing Blizz's calendar and GroupCalendar

[xtoq]

Ok, does anyone know a way that one could share data between the two calendars, or know of an addon that does this? Basically, I like to use GroupCalendar for myself and for some friends in other guilds, but our guild uses the basic Blizzard one because I don't want to hear excuses about "I can't get it to work" or "I don't want to download another addon." I think if you could synch these two together, it would amazing and would make my life easier for sure.