Holiday Day of Week Chart

Year 1555

Possible This year (1555) Never
Rosh Hashanah ראש השנה
Sep 18, -2206
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 27, -2206
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 2, -2206
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 8, -2206
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 9, -2206
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 10, -2206
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 10, -2206
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 27, -2205
S
M
T
W
T
F
Sh
Purim פורים
Feb 25, -2205
S
M
T
W
T
F
Sh
Pesach פסח
Mar 27, -2205
S
M
T
W
T
F
Sh
Shavuos שבועות
May 16, -2205
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jun 26, -2205
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 17, -2205
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 1555

Rosh Hashanah א׳ תשרי
Saturday
Sep 18, -2206
Yom Kippur י׳ תשרי
Monday
Sep 27, -2206
Sukkos ט״ו תשרי
Saturday
Oct 2, -2206
Hoshana Rabba כ״א תשרי
Friday
Oct 8, -2206
Shemini Atzeres כ״ב תשרי
Saturday
Oct 9, -2206
Simchas Torah כ״ג תשרי
Sunday
Oct 10, -2206
Chanukah כ״ה כסלו
Friday
Dec 10, -2206
Tu BiShvat ט״ו שבט
Thursday
Jan 27, -2205
Purim י״ד אדר
Friday
Feb 25, -2205
Pesach ט״ו ניסן
Sunday
Mar 27, -2205
Shavuos ו׳ סיון
Monday
May 16, -2205
17 Tammuz י״ז תמוז
Sunday
Jun 26, -2205
Tisha B'Av ט׳ אב
Sunday
Jul 17, -2205