• psud
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    1 year ago

    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

    • MoonMoon@lemmy.world
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      1 year ago

      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.