When the world recognizes bitcoin and all countries legalize bitcoin I think bitcoin day can happen one day
Why do we need to have bitcoin day when there is no Dollar or Euro day, is there even a country which celebrates inception of issuing their own fiat?
As far I know there is Bitcoin Pizza day - which is basically light and fun version of Bitcoin Day. We don't need anything more official IMO.
It's nice. Helding a Bitcoin day is good but there's a problem that Bitcoin is banned in some country so that if we celebrate Bitcoin day but they can't attend, there would be very difficult for the government to prevent them from their angry, there Bitcoin users will feel bad about this.
I doubt that there will any official party thrown out at Bitcoin's house.
Just disregard all bitcoin haters and stupid governments which banned BTC, because they know that BTC is way better asset that their own useless fiat.