What will you be doing on Thursday? I shall be doing what Catholics across Europe will be doing - attending Mass. True, our Bishops have announced that in England the Mass for Ascension Day is not to be celebrated on its proper day, but arbitrarily and bleakly switched to Sunday. But there is nothing to stop me - or you , or all your friends - attending Mass on what most of the rest of the world, and notably our nearest Catholic neighbours, will be enjoying as Ascension Day.
And no, I don't mean that you have to seek out a Tridentine Rite Mass and go there - though generally I'd be in favour of people going to that if they want to do so. But not on Thursday. That will only serve to let our Bishops claim that Ascension Day, or any other special and important feast-day, is now for people who have specific tastes, WHICH COMPLETELY MISSES THE POINT. The whole point is that we want to celebrate with the whole Church, with people in - for example - Poland and Germany, Switzerland and Spain (who even get a holiday from work on this day).
Go to Mass on Ascension Day - preferably at your nearest Cathedral. I'll be at mine. Pass the word, and join in. And while you're about it, mark your diary: June 7th, Feast of Corpus Christi.