Holiday Day of Week Chart

Year 2180

Possible This year (2180) Never
Rosh Hashanah ראש השנה
Sep 7, -1581
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 16, -1581
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 21, -1581
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Sep 27, -1581
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Sep 28, -1581
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Sep 29, -1581
S
M
T
W
T
F
Sh
Chanukah חנוכה
Nov 30, -1581
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 18, -1580
S
M
T
W
T
F
Sh
Purim פורים
Mar 17, -1580
S
M
T
W
T
F
Sh
Pesach פסח
Apr 16, -1580
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 5, -1580
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 16, -1580
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 6, -1580
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 2180

Rosh Hashanah א׳ תשרי
Saturday
Sep 7, -1581
Yom Kippur י׳ תשרי
Monday
Sep 16, -1581
Sukkos ט״ו תשרי
Saturday
Sep 21, -1581
Hoshana Rabba כ״א תשרי
Friday
Sep 27, -1581
Shemini Atzeres כ״ב תשרי
Saturday
Sep 28, -1581
Simchas Torah כ״ג תשרי
Sunday
Sep 29, -1581
Chanukah כ״ה כסלו
Saturday
Nov 30, -1581
Tu BiShvat ט״ו שבט
Saturday
Jan 18, -1580
Purim י״ד אדר
Tuesday
Mar 17, -1580
Pesach ט״ו ניסן
Thursday
Apr 16, -1580
Shavuos ו׳ סיון
Friday
Jun 5, -1580
17 Tammuz י״ז תמוז
Thursday
Jul 16, -1580
Tisha B'Av ט׳ אב
Thursday
Aug 6, -1580