Holiday Day of Week Chart

Year 4427

Possible This year (4427) Never
Rosh Hashanah ראש השנה
Sep 5, 0666
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 14, 0666
S
M
T
W
T
F
Sh
Sukkos סוכות
Sep 19, 0666
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Sep 25, 0666
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Sep 26, 0666
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Sep 27, 0666
S
M
T
W
T
F
Sh
Chanukah חנוכה
Nov 28, 0666
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 16, 0667
S
M
T
W
T
F
Sh
Purim פורים
Mar 16, 0667
S
M
T
W
T
F
Sh
Pesach פסח
Apr 15, 0667
S
M
T
W
T
F
Sh
Shavuos שבועות
Jun 4, 0667
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jul 15, 0667
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Aug 5, 0667
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 4427

Rosh Hashanah א׳ תשרי
Saturday
Sep 5, 0666
Yom Kippur י׳ תשרי
Monday
Sep 14, 0666
Sukkos ט״ו תשרי
Saturday
Sep 19, 0666
Hoshana Rabba כ״א תשרי
Friday
Sep 25, 0666
Shemini Atzeres כ״ב תשרי
Saturday
Sep 26, 0666
Simchas Torah כ״ג תשרי
Sunday
Sep 27, 0666
Chanukah כ״ה כסלו
Saturday
Nov 28, 0666
Tu BiShvat ט״ו שבט
Saturday
Jan 16, 0667
Purim י״ד אדר
Tuesday
Mar 16, 0667
Pesach ט״ו ניסן
Thursday
Apr 15, 0667
Shavuos ו׳ סיון
Friday
Jun 4, 0667
17 Tammuz י״ז תמוז
Thursday
Jul 15, 0667
Tisha B'Av ט׳ אב
Thursday
Aug 5, 0667