Holiday Day of Week Chart

Year 4310

Possible This year (4310) Never
Rosh Hashanah ראש השנה
Sep 9, 0549
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 18, 0549
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 23, 0549
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Sep 29, 0549
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Sep 30, 0549
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 1, 0549
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 1, 0549
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 19, 0550
S
M
T
W
T
F
Sh
Purim פורים
Feb 17, 0550
S
M
T
W
T
F
Sh
Pesach פסח
Mar 19, 0550
S
M
T
W
T
F
Sh
Shavuos שבועות
May 8, 0550
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jun 18, 0550
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 9, 0550
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 4310

Rosh Hashanah א׳ תשרי
Thursday
Sep 9, 0549
Yom Kippur י׳ תשרי
Saturday
Sep 18, 0549
Sukkos ט״ו תשרי
Thursday
Sep 23, 0549
Hoshana Rabba כ״א תשרי
Wednesday
Sep 29, 0549
Shemini Atzeres כ״ב תשרי
Thursday
Sep 30, 0549
Simchas Torah כ״ג תשרי
Friday
Oct 1, 0549
Chanukah כ״ה כסלו
Wednesday
Dec 1, 0549
Tu BiShvat ט״ו שבט
Wednesday
Jan 19, 0550
Purim י״ד אדר
Thursday
Feb 17, 0550
Pesach ט״ו ניסן
Saturday
Mar 19, 0550
Shavuos ו׳ סיון
Sunday
May 8, 0550
17 Tammuz י״ז תמוז
Saturday
Jun 18, 0550
Tisha B'Av ט׳ אב
Saturday
Jul 9, 0550