The most popular is roman calendar that is used in most of the countries, but it's also a religious calendar because of biblical seven days.
In my country we have different names for months -> Croatian month names but we still have seven days in the week.
The only place (in western history) where I haven't found seven days of the week was during the French Revolution -> French Republican Calendar where there was ten days during the week and so on. Since I have heard that in school I couldn't get it out of my head as an atheist.
Traditional Chinese Calendar also used ten days, but seven days week was introduced very early in first millenium CE. But they mostly use lunar year in practical sense, also they mark days in the year like the day when bugs awake from their sleep and so on, which is much more useful.
We all know that some people believe it is sin to work ether on Sunday or Sabbath which is the only reason for this seven day division.
Now what do you think, should there be a new week division that would be neutral to world religions, I know it's not practical just to change it, but still we can talk about it? Because I don't see why I should be ordered to rest every seventh day, why shouldn't I rest when ever I feel like it?
I'm perfectly happy with the 7 day division. Besides, days of the week in English have rather pagan names. I'm perfectly happy with this just like I am with that pagan tree in December.
In Poland, where I come from the name for Saturday comes from Sabbath, which is rather annoying but barely anyone knows it anyway...
By the way, I looked at your link about Croatian months. I guess the summer in Poland must be longer than yours ;) Your" Listopad' is October, our is November (exactly he same name and meaning). Our "the month of reaping with a sickle" (sierpień) is August; "month of the Linden Tree" (lipiec) is July; also your April "the month of the grass" is our "month of the flowers" (kwiecień). Funny that.
I guess the answer is twofold:
1. Yes, it would be a better solution. Counting in tens is much easier because you just change one digit in multiplication and division rather than 12 (which is mathematically superior due to divisibility) or 7 (the highest single digit prime).
2. No, its not sensible to change. Quite often it is better to have a system than the best system. The cost of changing an accepted and widely known system vs what is gained from the better one is not worth it.
"Now what do you think, should there be a new week division that would be neutral to world religions, I know it's not practical just to change it, but still we can talk about it?"
Heh. That reminds me of Stan, aka 'Loretta' the man who wanted to fight for his right have babies in Monty Python's Life of Brian.
I don't see the connection even dough I love the film.
I just wanted to propose a calendar without weeks, you work as it fits you, because if my computer breaks at 14pm on Saturday I have to wait till Monday to fix it. Completely absurd.
Good ideas one and all.
You'd think that the christians would have changed the (english language) names of the days of the week ages ago. Most days are named after pagan gods. Hilarious.