In Quebec? Could be. Could also be any one of a number of holidays.
http://www.maisonsaint-gabriel.qc.ca/en/musee/chr-22.php
What does the family look like it is celebrating in Le Traditionnel Gâteau des Rois by Edmond-Joseph Massicotte? It looks like Thanksgiving to me.
2 answers
http://www.google.com/search?q=Le+Traditionnel+G%C3%A2teau+des+Rois&oq=Le+Traditionnel+G%C3%A2teau+des+Rois&aqs=chrome..69i57.1317j0j7&sourceid=chrome&es_sm=119&ie=UTF-8#q=Le+Traditionnel+G%C3%A2teau+des+Rois+Edmond-Joseph+Massicotte