Holiday Day of Week Chart

Year 4240

Possible This year (4240) Never
Rosh Hashanah ראש השנה
Sep 3, 0479
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 12, 0479
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 17, 0479
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Sep 23, 0479
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Sep 24, 0479
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Sep 25, 0479
S
M
T
W
T
F
Sh
Chanukah חנוכה
Nov 25, 0479
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 12, 0480
S
M
T
W
T
F
Sh
Purim פורים
Mar 11, 0480
S
M
T
W
T
F
Sh
Pesach פסח
Apr 10, 0480
S
M
T
W
T
F
Sh
Shavuos שבועות
May 30, 0480
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 10, 0480
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 31, 0480
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 4240

Rosh Hashanah א׳ תשרי
Monday
Sep 3, 0479
Yom Kippur י׳ תשרי
Wednesday
Sep 12, 0479
Sukkos ט״ו תשרי
Monday
Sep 17, 0479
Hoshana Rabba כ״א תשרי
Sunday
Sep 23, 0479
Shemini Atzeres כ״ב תשרי
Monday
Sep 24, 0479
Simchas Torah כ״ג תשרי
Tuesday
Sep 25, 0479
Chanukah כ״ה כסלו
Sunday
Nov 25, 0479
Tu BiShvat ט״ו שבט
Saturday
Jan 12, 0480
Purim י״ד אדר
Tuesday
Mar 11, 0480
Pesach ט״ו ניסן
Thursday
Apr 10, 0480
Shavuos ו׳ סיון
Friday
May 30, 0480
17 Tammuz י״ז תמוז
Thursday
Jul 10, 0480
Tisha B'Av ט׳ אב
Thursday
Jul 31, 0480