Far more likely in Europe !
Given European population centres are far further north than most of their counterparts in North America, and any of their counterparts in the USA other than Anchorage which is still significantly further Southern than Reykjavik, it’s far more likely it will be seen in Europe than anywhere else.
If you consider Montreal is *south* of Paris.
Most of Northern Europe’s cities : London, Dublin, Brussels, Amsterdam, Copenhagen, Berlin, etc are all at Canadian latitudes.
Dublin for example being at same latitude as Edmonton, Alberta. London is very slightly north of Calgary.
We’ve very distorted mental view of maps.