Holiday Day of Week Chart

Year 4840

Possible This year (4840) Never
Rosh Hashanah ראש השנה
Aug 31, 1079
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 9, 1079
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 14, 1079
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Sep 20, 1079
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Sep 21, 1079
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Sep 22, 1079
S
M
T
W
T
F
Sh
Chanukah חנוכה
Nov 22, 1079
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 9, 1080
S
M
T
W
T
F
Sh
Purim פורים
Mar 8, 1080
S
M
T
W
T
F
Sh
Pesach פסח
Apr 7, 1080
S
M
T
W
T
F
Sh
Shavuos שבועות
May 27, 1080
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 7, 1080
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 28, 1080
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 4840

Rosh Hashanah א׳ תשרי
Saturday
Aug 31, 1079
Yom Kippur י׳ תשרי
Monday
Sep 9, 1079
Sukkos ט״ו תשרי
Saturday
Sep 14, 1079
Hoshana Rabba כ״א תשרי
Friday
Sep 20, 1079
Shemini Atzeres כ״ב תשרי
Saturday
Sep 21, 1079
Simchas Torah כ״ג תשרי
Sunday
Sep 22, 1079
Chanukah כ״ה כסלו
Friday
Nov 22, 1079
Tu BiShvat ט״ו שבט
Thursday
Jan 9, 1080
Purim י״ד אדר
Sunday
Mar 8, 1080
Pesach ט״ו ניסן
Tuesday
Apr 7, 1080
Shavuos ו׳ סיון
Wednesday
May 27, 1080
17 Tammuz י״ז תמוז
Tuesday
Jul 7, 1080
Tisha B'Av ט׳ אב
Tuesday
Jul 28, 1080