Let us make this International Fixed Calendar work by u/BanX

Working with dates and times are a nightmare when you're programming. Daylight savings should just be put in the bin.

I first saw this proposal by Dave Gorman as part of his Modern Life is Goodish show:

One correction I'd make is that New Years Day(s) should not just be a floating day otherwise there's no rotation so you'll never have your birthday on a weekend.