proper noun
September 30th; Orange Shirt Day; a Canadian national observance first observed in 2013
Synonyms: Jour du chandail orange, Jour du t-shirt orange, Journée du chandail orange
Calque of English Orange Shirt Day. From the colour of the shirt worn by a survivor of the residential school system, that was forcibly removed by Christian missionaries attempting to assimilate her into the culture of Canada's settlers, and away from her Indigenous culture. From those observing the day, who wear orange T-shirts.