Tired of holidays falling on different days of the week year after year? So is former NASA astrophysicist Richard Conn Henry. That's why he designed the so-called rational calendar:
Irritated with inconsistency and beguiled by the possibilities of a steady-schedule world — “Every institution in the world has to change their calendar. Sports schedules. Every company. The dates of holidays have to be reset. And it’s all totally unnecessary,” he said — Henry went to work. [...]
According to Richard Conn Henry’s calendar, eight months would each have 30 days. Every third month would have 31 days. Every so often, to account for the leftover time, a whole extra week would be added.
The upshot: Years would proceed with clockwork regularity, with no annual re-jiggering of schedules required. Each day would occupy the same position as it had the previous year and would in the next. Were this 364-day calendar, known officially as the Hanke-Henry Permanent Calendar, adopted on the first day of 2012, both Christmas and New Year’s Day would forever fall on Sunday.
Brandon Keim of Wired Science has more: Link
@XsTatiC in Australia we do a "near enough is good enough" with seasons and have the same start day each year. Summer is December to February, Autumn: March to May, Winter: June to August, Spring: September to November. So maybe you could just adopt our method. It's much easier and it's not like the actual weather pays any attention to what season anyone says it is.
There are some things that we can control without having to rejig the calendar that we've used for two milennia with only one large change since Julius Caesar.
Besides, why would we want to change the current system? It's kinda fun the way it is. If you really want to celebrate Christmas on Sunday, just have it on the first Sunday after December 25, and celebrate New Year's the first Sunday after January 1.
So, if you want to switch to this calendar AND not join the Hindu/Muslim/Jewish experience in America (have to check my dual calendar to find out "regular" date of next holiday), you should start by selling this idea to the pope, then the rest of the Western churches, so your Christmas really stays fixed.
And if I celebrated Christmas, I'd want it fixed on Mondays so I get a long weekend. Just sayin'.