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13 Months (startrek.website)
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[-] billwashere@lemmy.world 48 points 1 year ago

Well if the 1st is on Sunday then every month would have a Friday 13th.

This is Jason Voorhees propaganda

[-] billwashere@lemmy.world 4 points 1 year ago
[-] themeatbridge@lemmy.world 3 points 1 year ago

tch tch tch tch tch, ah ah ah ah ah

[-] rmuk@feddit.uk 8 points 1 year ago

Did you know that the 13th day of the month is more likely to be a Friday than any of the other weekdays?

[-] billwashere@lemmy.world 16 points 1 year ago

I'm a nerd so I had to write code to check this out.

https://pastebin.com/62kwesZz

So from 1/1/1500 until 12/31/2023:

Weekday counts: Monday: 898 Tuesday: 897 Wednesday: 901 Thursday: 896 Friday: 901 Saturday: 896 Sunday: 899

No idea why, and other than a tie with Wednesday, this is indeed true. Well if my code is correct.

[-] spuncertv@iusearchlinux.fyi 3 points 1 year ago

Depends on the year you start, it is thrown off by leap years.

[-] Makeitstop@lemmy.world 1 points 1 year ago

For most proposals like this, new years day and leap day wouldn't have a day of the week. And therefore the calendar wouldn't change from year to year.

[-] spuncertv@iusearchlinux.fyi 1 points 1 year ago

I was just talking about why there have been more fridays the 13ths since 1500.

[-] uis@lemmy.world 2 points 1 year ago

until 12/31/2023:

My eyes see mixed-endian! I want them to unsee it!

Decide already whether you want 2023.12.31 or 31.12.2023.

[-] rmuk@feddit.uk 1 points 1 year ago

I think your code is fine. The Gregorian Calendar actually runs on a 400-year cycle (i.e. the pattern caused by 7-day weeks, variable-length months and leap years repeats every 400 years) so if you re-ran the code against a 400-year period you'd get the correct ratios.

[-] at_an_angle@lemmy.one 3 points 1 year ago

My favorite day. đź–¤

this post was submitted on 03 Nov 2023
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