Holiday Day of Week Chart

Year 8181

Possible This year (8181) Never
Rosh Hashanah ראש השנה
Sep 22, 4420
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Oct 1, 4420
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 6, 4420
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 12, 4420
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 13, 4420
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 14, 4420
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 14, 4420
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 1, 4421
S
M
T
W
T
F
Sh
Purim פורים
Apr 1, 4421
S
M
T
W
T
F
Sh
Pesach פסח
May 1, 4421
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 20, 4421
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 31, 4421
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 21, 4421
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 8181

Rosh Hashanah א׳ תשרי
Tuesday
Sep 22, 4420
Yom Kippur י׳ תשרי
Thursday
Oct 1, 4420
Sukkos ט״ו תשרי
Tuesday
Oct 6, 4420
Hoshana Rabba כ״א תשרי
Monday
Oct 12, 4420
Shemini Atzeres כ״ב תשרי
Tuesday
Oct 13, 4420
Simchas Torah כ״ג תשרי
Wednesday
Oct 14, 4420
Chanukah כ״ה כסלו
Monday
Dec 14, 4420
Tu BiShvat ט״ו שבט
Monday
Feb 1, 4421
Purim י״ד אדר
Thursday
Apr 1, 4421
Pesach ט״ו ניסן
Saturday
May 1, 4421
Shavuos ו׳ סיון
Sunday
Jun 20, 4421
17 Tammuz י״ז תמוז
Saturday
Jul 31, 4421
Tisha B'Av ט׳ אב
Saturday
Aug 21, 4421