Holiday Day of Week Chart

Year 2504

Possible This year (2504) Never
Rosh Hashanah ראש השנה
Sep 25, -1257
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Oct 4, -1257
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 9, -1257
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 15, -1257
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 16, -1257
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 17, -1257
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 4, -1256
S
M
T
W
T
F
Sh
Purim פורים
Mar 4, -1256
S
M
T
W
T
F
Sh
Pesach פסח
Apr 3, -1256
S
M
T
W
T
F
Sh
Shavuos שבועות
May 23, -1256
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 3, -1256
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 24, -1256
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 2504

Rosh Hashanah א׳ תשרי
Tuesday
Sep 25, -1257
Yom Kippur י׳ תשרי
Thursday
Oct 4, -1257
Sukkos ט״ו תשרי
Tuesday
Oct 9, -1257
Hoshana Rabba כ״א תשרי
Monday
Oct 15, -1257
Shemini Atzeres כ״ב תשרי
Tuesday
Oct 16, -1257
Simchas Torah כ״ג תשרי
Chanukah כ״ה כסלו
Monday
Dec 17, -1257
Tu BiShvat ט״ו שבט
Monday
Feb 4, -1256
Purim י״ד אדר
Tuesday
Mar 4, -1256
Pesach ט״ו ניסן
Thursday
Apr 3, -1256
Shavuos ו׳ סיון
Friday
May 23, -1256
17 Tammuz י״ז תמוז
Thursday
Jul 3, -1256
Tisha B'Av ט׳ אב
Thursday
Jul 24, -1256