The Calgary 2600 meeting is a monthly meeting of people who are generally interested and enjoy things that are computing and technology related. The 2600 Meetings were originally started by 2600 magazine. A better and more complete description of what the 2600 meetings are about can be found here.
The Calgary 2600 meetings happen on the first Friday of every month at 6:00pm Calgary time with the meeting being usually located in the food court of the Eau Claire Market.