Holiday Day of Week Chart

Year 1845

Possible This year (1845) Never
Rosh Hashanah ראש השנה
Sep 21, -1916
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 30, -1916
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 5, -1916
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 11, -1916
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 12, -1916
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 13, -1916
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 14, -1916
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Feb 1, -1915
S
M
T
W
T
F
Sh
Purim פורים
Mar 2, -1915
S
M
T
W
T
F
Sh
Pesach פסח
Apr 1, -1915
S
M
T
W
T
F
Sh
Shavuos שבועות
May 21, -1915
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 1, -1915
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 22, -1915
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 1845

Rosh Hashanah א׳ תשרי
Monday
Sep 21, -1916
Yom Kippur י׳ תשרי
Wednesday
Sep 30, -1916
Sukkos ט״ו תשרי
Monday
Oct 5, -1916
Hoshana Rabba כ״א תשרי
Sunday
Oct 11, -1916
Shemini Atzeres כ״ב תשרי
Monday
Oct 12, -1916
Simchas Torah כ״ג תשרי
Tuesday
Oct 13, -1916
Chanukah כ״ה כסלו
Monday
Dec 14, -1916
Tu BiShvat ט״ו שבט
Monday
Feb 1, -1915
Purim י״ד אדר
Tuesday
Mar 2, -1915
Pesach ט״ו ניסן
Thursday
Apr 1, -1915
Shavuos ו׳ סיון
Friday
May 21, -1915
17 Tammuz י״ז תמוז
Thursday
Jul 1, -1915
Tisha B'Av ט׳ אב
Thursday
Jul 22, -1915