Holiday Day of Week Chart

Year 1215

Possible This year (1215) Never
Rosh Hashanah ראש השנה
Sep 26, -2546
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Oct 5, -2546
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 10, -2546
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 16, -2546
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 18, -2546
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 5, -2545
S
M
T
W
T
F
Sh
Purim פורים
Mar 6, -2545
S
M
T
W
T
F
Sh
Pesach פסח
Apr 5, -2545
S
M
T
W
T
F
Sh
Shavuos שבועות
May 25, -2545
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 5, -2545
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 26, -2545
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 1215

Rosh Hashanah א׳ תשרי
Tuesday
Sep 26, -2546
Yom Kippur י׳ תשרי
Thursday
Oct 5, -2546
Sukkos ט״ו תשרי
Tuesday
Oct 10, -2546
Hoshana Rabba כ״א תשרי
Monday
Oct 16, -2546
Shemini Atzeres כ״ב תשרי
Simchas Torah כ״ג תשרי
Chanukah כ״ה כסלו
Monday
Dec 18, -2546
Tu BiShvat ט״ו שבט
Monday
Feb 5, -2545
Purim י״ד אדר
Tuesday
Mar 6, -2545
Pesach ט״ו ניסן
Thursday
Apr 5, -2545
Shavuos ו׳ סיון
Friday
May 25, -2545
17 Tammuz י״ז תמוז
Thursday
Jul 5, -2545
Tisha B'Av ט׳ אב
Thursday
Jul 26, -2545