I'm not sure I agree actually. I feel Remembrance Sunday is the 'main event' anyway and serves the purpose of remembering and commemorating. To be honest, in the years when Remembrance Sunday doesn't fall on the 11th November, virtually everywhere still observes the silence (shops, businesses, public buildings etc), so it's a very definite commemoration still. I don't think making it a public holiday would make it any more important. To me, Remembrance Sunday IS a national remembrance day.