Holiday Day of Week Chart

Year 1243

Possible This year (1243) Never
Rosh Hashanah ראש השנה
Sep 16, -2518
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 25, -2518
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 30, -2518
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 6, -2518
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 7, -2518
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 8, -2518
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 9, -2518
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 27, -2517
S
M
T
W
T
F
Sh
Purim פורים
Mar 27, -2517
S
M
T
W
T
F
Sh
Pesach פסח
Apr 26, -2517
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 15, -2517
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 26, -2517
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 16, -2517
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 1243

Rosh Hashanah א׳ תשרי
Saturday
Sep 16, -2518
Yom Kippur י׳ תשרי
Monday
Sep 25, -2518
Sukkos ט״ו תשרי
Saturday
Sep 30, -2518
Hoshana Rabba כ״א תשרי
Friday
Oct 6, -2518
Shemini Atzeres כ״ב תשרי
Saturday
Oct 7, -2518
Simchas Torah כ״ג תשרי
Sunday
Oct 8, -2518
Chanukah כ״ה כסלו
Saturday
Dec 9, -2518
Tu BiShvat ט״ו שבט
Saturday
Jan 27, -2517
Purim י״ד אדר
Tuesday
Mar 27, -2517
Pesach ט״ו ניסן
Thursday
Apr 26, -2517
Shavuos ו׳ סיון
Friday
Jun 15, -2517
17 Tammuz י״ז תמוז
Thursday
Jul 26, -2517
Tisha B'Av ט׳ אב
Thursday
Aug 16, -2517