North American Meetings Industry Day, 2015
2015 is the year the Canadian habit crossed the border under a new name. Meetings Mean Business and the Events Industry Council worked with MPI so that the United States and Mexico sat on the same date as Canada. The label was North American Meetings Industry Day — NAMID.
NAMID lasted one public season as the top-level name. 2016 already spoke of a global edition. The 2015 step still matters because it is when a U.S. advocacy coalition and a standards body entered the masthead beside Canadian chapters.
If a clipping says NAMID, it is almost certainly talking about 2015 or about the coalition language of that winter. Later copy says GMID.