A positive association between nonfatal deliberate self-harm in adolescents & holidays, e.g. St. Valentine’s Day & Christmas Day was previously reported (Davenport & Birtle, 1990). The present authors studied all cases of nonfatal deliberate self-harm presenting to 3 London hospitals on St. Valentine’s Day & Christmas Day & on 2 control dates, between 1983 & 1989. No association was found between cases of self-harm & St. Valentine’s Day, but a negative association was found with Christmas Day.