Holiday Day of Week Chart

Year 9660

Possible This year (9660) Never
Rosh Hashanah ראש השנה
Oct 2, 5899
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Oct 11, 5899
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 16, 5899
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 25, 5899
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 12, 5900
S
M
T
W
T
F
Sh
Purim פורים
Apr 12, 5900
S
M
T
W
T
F
Sh
Pesach פסח
S
M
T
W
T
F
Sh
Shavuos שבועות
Jul 1, 5900
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Sep 1, 5900
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 9660

Rosh Hashanah א׳ תשרי
Monday
Oct 2, 5899
Yom Kippur י׳ תשרי
Wednesday
Oct 11, 5899
Sukkos ט״ו תשרי
Monday
Oct 16, 5899
Hoshana Rabba כ״א תשרי
Shemini Atzeres כ״ב תשרי
Simchas Torah כ״ג תשרי
Chanukah כ״ה כסלו
Monday
Dec 25, 5899
Tu BiShvat ט״ו שבט
Monday
Feb 12, 5900
Purim י״ד אדר
Thursday
Apr 12, 5900
Pesach ט״ו ניסן
Shavuos ו׳ סיון
Sunday
Jul 1, 5900
17 Tammuz י״ז תמוז
Tisha B'Av ט׳ אב
Saturday
Sep 1, 5900