Holiday Day of Week Chart

Year 1917

Possible This year (1917) Never
Rosh Hashanah ראש השנה
Sep 4, -1844
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 13, -1844
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 18, -1844
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Sep 24, -1844
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Sep 25, -1844
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Sep 26, -1844
S
M
T
W
T
F
Sh
Chanukah חנוכה
Nov 27, -1844
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 15, -1843
S
M
T
W
T
F
Sh
Purim פורים
Mar 15, -1843
S
M
T
W
T
F
Sh
Pesach פסח
Apr 14, -1843
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 3, -1843
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 14, -1843
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 4, -1843
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 1917

Rosh Hashanah א׳ תשרי
Thursday
Sep 4, -1844
Yom Kippur י׳ תשרי
Saturday
Sep 13, -1844
Sukkos ט״ו תשרי
Thursday
Sep 18, -1844
Hoshana Rabba כ״א תשרי
Wednesday
Sep 24, -1844
Shemini Atzeres כ״ב תשרי
Thursday
Sep 25, -1844
Simchas Torah כ״ג תשרי
Friday
Sep 26, -1844
Chanukah כ״ה כסלו
Thursday
Nov 27, -1844
Tu BiShvat ט״ו שבט
Thursday
Jan 15, -1843
Purim י״ד אדר
Sunday
Mar 15, -1843
Pesach ט״ו ניסן
Tuesday
Apr 14, -1843
Shavuos ו׳ סיון
Wednesday
Jun 3, -1843
17 Tammuz י״ז תמוז
Tuesday
Jul 14, -1843
Tisha B'Av ט׳ אב
Tuesday
Aug 4, -1843