National Stamp Shows and Exhibitions
Although there are local stamp shows and exhibitions all over Canada, the USA, and most other countries where collecting is a major hobby, shows classified as "national" refer more to the level associated with individual exhibits. These shows reflect a higher standard of exhibiting and judging. Shows will be posted once details are available. Here are currently known Canadian national shows.
June 9-12 - CAPEX 22 International One Frame Stamp Championship Exhibition, Metro Toronto Convention Centre (MTCC), Toronto, ON https://capex22.org