Holiday Day of Week Chart

Year 7645

Possible This year (7645) Never
Rosh Hashanah ראש השנה
Oct 4, 3884
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Oct 13, 3884
S
M
T
W
T
F
Sh
Sukkos סוכות
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
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 27, 3884
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 14, 3885
S
M
T
W
T
F
Sh
Purim פורים
Mar 15, 3885
S
M
T
W
T
F
Sh
Pesach פסח
Apr 14, 3885
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 3, 3885
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 14, 3885
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 4, 3885
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 7645

Rosh Hashanah א׳ תשרי
Saturday
Oct 4, 3884
Yom Kippur י׳ תשרי
Monday
Oct 13, 3884
Sukkos ט״ו תשרי
Hoshana Rabba כ״א תשרי
Shemini Atzeres כ״ב תשרי
Simchas Torah כ״ג תשרי
Chanukah כ״ה כסלו
Saturday
Dec 27, 3884
Tu BiShvat ט״ו שבט
Saturday
Feb 14, 3885
Purim י״ד אדר
Sunday
Mar 15, 3885
Pesach ט״ו ניסן
Tuesday
Apr 14, 3885
Shavuos ו׳ סיון
Wednesday
Jun 3, 3885
17 Tammuz י״ז תמוז
Tuesday
Jul 14, 3885
Tisha B'Av ט׳ אב
Tuesday
Aug 4, 3885