13 Fridays the 13th
Jason would unionize if he had that many hours of work to do
If the first was Monday as he describes, every 12th would be a Friday. There would be exactly zero Fridays on the 13th of any month.
Every 13th would only be Friday if the first was on Sunday.
The first should be a Sunday. Then we can align with Stardew Valley time.
Yay for The Human Calculator Calendar. Boo for not crediting sources. A missed opportunity to replace Jesse’s name with, “Scott.”
Double boo for not explaining the extra day every year, not to mention leap year. (364 / 28 = 13.)
Final boo for conflating the real world ~29.5 day imprecise lunar month with the 28 day English common law lunar month.
“The simple idea of a 13-month perennial calendar has been around since at least the middle of the 18th century. Versions of the idea differ mainly on how the months are named, and the treatment of the extra day in leap year.”
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New Year’s Day. The next day is Monday. And every four years there is a second New Year’s Day
This.
And also, it should still be 12 months, just 4 months (December, January, June and July) should have 5 weeks while the other months have 4 weeks.
The last weeks of December and June and the first weeks of January and July then form a special kind of “half months”, where you get a half month salary and pay a half month rent, etc. Christmas and New Years nicely fit in the Jan/Dec two week holiday, which would be 15 days instead of 14.
In a leap year, the June/July half month would be 15 days instead of 14
This way each season/quarter is still equal to 3 months with 13 weeks. And a half year is 6 months with 26 weeks.
Someone mentioned seasonal regression, this solution should solve that.
And the irony of this all… This is very close to how our current calendar started before Caesars fucked it up.
And also, it should still be 12 months, just 4 months (December, January, June and July) should have 5 weeks while the other months have 4 weeks
But they you still have irregularities. Easier to just add Undecimber to the calendar.
Have a “liminal day” that serves as New Year’s Day, and then every leap year put the extra day as the last day of the leap year after the last month.
The big trouble is that there isn’t a subdivision between the month and the year, 13 is prime, there isn’t a whole number division of months that can be used to mark say a fiscal quarter for example.
So I say instead of a 13th month, split those 4 weeks to be an extra week at the end of every 3rd month, so March, June, September, and December would all have 35 days instead of 28.
Kinda what Caesar was going for originally too, having the months alternate between 30 and 31 days, but he fucked it up because Romans were superstitious about February for whatever reason.
Every new years day and leap day exists as its own thing outside of any particular month. So every year we get a full new year holiday and about every four years it’s a full blown 2 day event. It doesn’t need to even be a named day of the week or part of a named month. It can just be it’s own thing. We can number it as the 0 month if it makes you feel better and to help sorting dates. If we’re feeling sentimental, maybe we can call it Friday the 13th because those won’t be a thing anymore otherwise.
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Each year, the moon phase would shift one day (and an additional every four years for a leap day), then sync with that day for the next year. That sounds much better than what we have now.
I can tell you’re a programmer, you autocorrected to sprint instead of spring lol
As a programmer, I kindly ask you not to mess with time and date definitions, ever
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Aren’t the definitions just a client side issue these days? When times are compared it’s unix or unix msec.
2038 is only a problem for systems with 32 bit Unix time timekeeping. Right now that’s only a few embedded systems, in fifteen years there will be even fewer
This isn’t even remotely as bad as Y2K where many systems used two digits to store years and rolled over unpredictably when tested. We considered one system in my workplace “good enough” as it rolled over to 100 so the calculations still worked. Others crashed, for example clobbering something in RAM when adding 99 + 1 and storing the results in two bytes
I’ve heard that Augustus wanted “his own month just like Julius” and that’s how they took 2 days from february for july and august. That way we ended having less months with 30 days. Never did look it up if it’s true.
I don’t like the idea of my birthday being on the same day of the week every year. Based on the IFC Calendar, mine would be on a Tuesday every year and that would suck.
So track your birthday on the old calendar. Religious folks will be using old calendars to track important days
Which day of the week your birthday would fall on in the new calendar would depend on which year the new calendar came in.
My birthday is the 31st day of its month, it’s erased by all the 4 week month calendars
So I was curious about this and realized that your birthday will need to be converted for the year you were born to align with the date on the International Foxed Calendar. You just need to convert it once and use the new date from then on.
For example, say you were born on 31 Jan Gregorian. That would mean that your new birthday will be on 3 Feb in the new calendar. This would work for most dates except those between the periods of 28 Feb and 18 Jun (not inclusive) on the Gregorian calendar. Your birthday would depend on whether you were born in a leap year or not. For instance 1 May Gregorian would be 9 May IFC if you were born in a common year or 10 May IFC for a leap year. From then on you would celebrate that as you birthday. This could lead to a lot of people not sharing a birthday anymore if they were born in different years and one was a leap year. Also, if you were born on 29 Feb Gregorian, you’d now always have your birthday on 1 Mar, but if you were born on 17 Jun in a leap year, your birthday is Leap Day and outside of the calendar. All the best getting a venue for your party since it’s a public holiday.
Interestingly, anyone born in the period 18 Jun to 15 Jul Gregorian would now celebrate their birthday in the new month of Sol. Congratulations!
The rest of the year would be pretty standard. For example, anyone born on 1 Aug would now celebrate their birthday on 17 July irrespective of whether they were born in a leap year or not.
30 Dec Gregorian would now be 28 Dec IFC and 31 Dec is Year Day! Hope you found that venue for Leap Day, coz your friend now needs it for their birthday.
It sounds complicated at first, but once we started recording people’s birthdays on the new calendar as they were born, it would effectively be the same.
No. Base 12 and base 60 are significantly better for things that are commonly divided into halves, thirds, fourths and so on.
A “day” is 86400 seconds. Changing the length of a second is a non starter, so you’d end up saying a day doesn’t line up with a day night cycle, or something weird like “a day is 8.64 hours long”, which doesn’t feel better than 24.
Yep, base 10, base 10 everywhere.
Chad ancestors splited 1 year of 10 months of 3 décades of 10 days of 10 hours of 100 minutes of 100 seconds and so on. With 5 or 6 “sans-culotides” to handle leap years.
Also each unit of a decade is related to a fixed name: for example, “primedi” (first day of decade) is the 1st, 11th and 21th days of any month, “duodi” 2nd, 12th and 22th, “tridi” 3rd, 13th, 23th and so on until décadi fot 10th,20th and 30th and last day of the décade.
Jesse would approve that
Calendar of King Romulus:
Martius - 31 Days
Aprilis - 30 Days
Maius - 31 Days
Iunius - 30 Days
Quintilis - 31 Days
Sextilis - 30 Days
September - 30 Days
October - 31 Days
November - 30 Days
December - 30 Days
All credit and mistakes may be attributed to history.stackexchange.
Kodak used to operate on this 13 month calendar. When I asked someone who used to work there, she was shocked that I knew about it and said that it was the best thing about working there. The original plan that this calendar is based on called for a liminal day between years for New Year’s Day with 2 days for leap years
Big Calendar would never allow for this. Imagine only ever having to buy one calendar!
I work for a company which used to have 13 financial periods. It was great. Then they switched to 12 and we now have a couple of 5 week periods thrown in to balance the year out. I don’t know why they decided that but it’s not as good now.
I’m surprised they successfully attempted that and that it resulted to be taken positively. It seems as every out-of-the-norm scheduling idea is so frowned upon that even in small companies you can steer them to anything but the same ole.
I’ve used iso-weeks for this purpose. I don’t really care for dates if I don’t absolutely have to. It’s nice to refer to “week 44 five years ago” in my journals. Truth be told, no one else around me uses the weeks and the only mention to it I’ve heard was not positive.
I’m responsible for our databases and work with our BI guy a lot. Changing from 13 to 12 periods was a right pain. We had snapshots, budgets and loads of forecasting data, all of which needed to be updated to reflect the new calendar. It wasn’t as easy as dumping a new calendar in, well it perhaps could have been if we were given ample time to plan it.
In regards to week, period, year, quarter, etc that’s all easy for the user to switch to their preferred view in the BI system. The ERP system will use the financial calendar but reporting is done against whatever the user sees fit.
13 period financial calendars don’t break down into quarters that easily. One reporting quarter will always have an extra period.
5-4-4 creates even quarters except it requires either one extra day every year or one extra week every five to six years. It’s most beneficial for companies that either experience high seasonality or high consistency, such as retail and manufacturing.
Most other companies just use calendar month since it’s simple, easy to determine, and allows for rather consistent year-over-year comparison.
There is a choice between having an extra day in the holiday season and counting up the extra days plus leap days, and inserting an extra week every several years
Adding the extra day annoys people who value weeks continuing as they have since ancient times
Using a leap week rule makes the calendar track the seasons a little worse. Solstices and equinoxes will move by about a week over several years
