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Longest Jewish year



Parashat Pekudei
Purim and Shushan Purim247 year Jewish calendar cycleHow Do I Know If it's a Hebrew Leap Year?Why do Cheshvan and Kislev vary in length?In a leap year, is the extra month Adar I or Adar II?How does one “add a year” in the Hebrew calendar?Is there a zero year in the ancient Jewish calendar?“Early” leap yearsWhy do Kisidran years only occur when starting on a Tuesday or non-leap Thursday?Jewish calendar and the measured time of a yearIs there a pattern to whether a year is full/regular/deficient? Is there an online source that lists them?Jewish and Gregorian year's last digit












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This year, 5779, is the longest possible year on the Jewish calendar. Not only is it a leap year, but Cheshvan and Kislev both have 30 days, for a total of 385 days. How often does that happen?










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    1















    This year, 5779, is the longest possible year on the Jewish calendar. Not only is it a leap year, but Cheshvan and Kislev both have 30 days, for a total of 385 days. How often does that happen?










    share|improve this question



























      1












      1








      1








      This year, 5779, is the longest possible year on the Jewish calendar. Not only is it a leap year, but Cheshvan and Kislev both have 30 days, for a total of 385 days. How often does that happen?










      share|improve this question
















      This year, 5779, is the longest possible year on the Jewish calendar. Not only is it a leap year, but Cheshvan and Kislev both have 30 days, for a total of 385 days. How often does that happen?







      calendar statistics






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 34 mins ago









      DonielF

      14.2k12380




      14.2k12380










      asked 2 hours ago









      Maurice MizrahiMaurice Mizrahi

      1,817215




      1,817215






















          1 Answer
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          It happens in 1371/8512 years, which is about 16.1%.






          share|improve this answer





















          • 1





            Could you add something about how you arrived at (or sourced) that number?

            – Monica Cellio
            1 hour ago











          • Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

            – DonielF
            31 mins ago













          • @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

            – Double AA
            15 mins ago











          • Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

            – DonielF
            13 mins ago



















          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          2














          It happens in 1371/8512 years, which is about 16.1%.






          share|improve this answer





















          • 1





            Could you add something about how you arrived at (or sourced) that number?

            – Monica Cellio
            1 hour ago











          • Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

            – DonielF
            31 mins ago













          • @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

            – Double AA
            15 mins ago











          • Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

            – DonielF
            13 mins ago
















          2














          It happens in 1371/8512 years, which is about 16.1%.






          share|improve this answer





















          • 1





            Could you add something about how you arrived at (or sourced) that number?

            – Monica Cellio
            1 hour ago











          • Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

            – DonielF
            31 mins ago













          • @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

            – Double AA
            15 mins ago











          • Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

            – DonielF
            13 mins ago














          2












          2








          2







          It happens in 1371/8512 years, which is about 16.1%.






          share|improve this answer















          It happens in 1371/8512 years, which is about 16.1%.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 2 hours ago

























          answered 2 hours ago









          Double AADouble AA

          78k6188410




          78k6188410








          • 1





            Could you add something about how you arrived at (or sourced) that number?

            – Monica Cellio
            1 hour ago











          • Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

            – DonielF
            31 mins ago













          • @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

            – Double AA
            15 mins ago











          • Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

            – DonielF
            13 mins ago














          • 1





            Could you add something about how you arrived at (or sourced) that number?

            – Monica Cellio
            1 hour ago











          • Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

            – DonielF
            31 mins ago













          • @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

            – Double AA
            15 mins ago











          • Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

            – DonielF
            13 mins ago








          1




          1





          Could you add something about how you arrived at (or sourced) that number?

          – Monica Cellio
          1 hour ago





          Could you add something about how you arrived at (or sourced) that number?

          – Monica Cellio
          1 hour ago













          Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

          – DonielF
          31 mins ago







          Where do you get 1371/8512 from? My reading of the Tur’s chart gives 40/247, which is slightly off but still rounds to 16.1%. Where does the difference come from? (And what does 8512 represent? I know of 19 year cycles, 247 year cycles, and over 600K year cycles, but 8512 is new to me.)

          – DonielF
          31 mins ago















          @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

          – Double AA
          15 mins ago





          @doni the difference is from judaism.stackexchange.com/q/64074/759 and see edits

          – Double AA
          15 mins ago













          Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

          – DonielF
          13 mins ago





          Ah, makes sense now. So 8512 doesn’t mean anything in particular, that’s just the most reduced fraction?

          – DonielF
          13 mins ago



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