Holiday Day of Week Chart

Year 6678

Possible This year (6678) Never
Rosh Hashanah ראש השנה
Oct 9, 2917
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
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
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 17, 2918
S
M
T
W
T
F
Sh
Purim פורים
Mar 18, 2918
S
M
T
W
T
F
Sh
Pesach פסח
Apr 17, 2918
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 6, 2918
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 17, 2918
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 7, 2918
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 6678

Rosh Hashanah א׳ תשרי
Saturday
Oct 9, 2917
Yom Kippur י׳ תשרי
Sukkos ט״ו תשרי
Hoshana Rabba כ״א תשרי
Shemini Atzeres כ״ב תשרי
Simchas Torah כ״ג תשרי
Chanukah כ״ה כסלו
Tu BiShvat ט״ו שבט
Thursday
Feb 17, 2918
Purim י״ד אדר
Friday
Mar 18, 2918
Pesach ט״ו ניסן
Sunday
Apr 17, 2918
Shavuos ו׳ סיון
Monday
Jun 6, 2918
17 Tammuz י״ז תמוז
Sunday
Jul 17, 2918
Tisha B'Av ט׳ אב
Sunday
Aug 7, 2918