Holiday Day of Week Chart

Year 1531

Possible This year (1531) Never
Rosh Hashanah ראש השנה
Sep 13, -2230
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 22, -2230
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 27, -2230
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 3, -2230
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 4, -2230
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 5, -2230
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 5, -2230
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 22, -2229
S
M
T
W
T
F
Sh
Purim פורים
Mar 22, -2229
S
M
T
W
T
F
Sh
Pesach פסח
Apr 21, -2229
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 10, -2229
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 21, -2229
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 11, -2229
S
M
T
W
T
F
Sh

How does this work?

The Jewish calendar follows fixed arithmetic rules that determine which day of the week each holiday can fall on. There are exactly 14 possible year types (keviyot / קביעות), each determining the day of the week for every holiday in that year.

Lo ADU — לא אד״ו

Rosh Hashanah never falls on Sunday, Wednesday, or Friday. This prevents Yom Kippur from being adjacent to Shabbos and Hoshana Rabba from falling on Shabbos.

Lo BaDU — לא בד״ו

Pesach never falls on Monday, Wednesday, or Friday. This is a mathematical consequence of Lo ADU combined with the structure of the year.

AT BASH — א״ת ב״ש

A mnemonic pairing holidays that always fall on the same day of the week: Tisha B'Av = 1st day Pesach, Shavuos = 2nd day Pesach, Rosh Hashanah = 3rd day Pesach, Simchas Torah = 4th day Pesach, Yom Kippur = 5th day Pesach, Purim (previous) = 6th day Pesach.

Holiday Details for 1531

Rosh Hashanah א׳ תשרי
Saturday
Sep 13, -2230
Yom Kippur י׳ תשרי
Monday
Sep 22, -2230
Sukkos ט״ו תשרי
Saturday
Sep 27, -2230
Hoshana Rabba כ״א תשרי
Friday
Oct 3, -2230
Shemini Atzeres כ״ב תשרי
Saturday
Oct 4, -2230
Simchas Torah כ״ג תשרי
Sunday
Oct 5, -2230
Chanukah כ״ה כסלו
Friday
Dec 5, -2230
Tu BiShvat ט״ו שבט
Thursday
Jan 22, -2229
Purim י״ד אדר
Sunday
Mar 22, -2229
Pesach ט״ו ניסן
Tuesday
Apr 21, -2229
Shavuos ו׳ סיון
Wednesday
Jun 10, -2229
17 Tammuz י״ז תמוז
Tuesday
Jul 21, -2229
Tisha B'Av ט׳ אב
Tuesday
Aug 11, -2229