Holiday Day of Week Chart

Year 5409

Possible This year (5409) Never
Rosh Hashanah ראש השנה
Sep 17, 1648
S
M
T
W
T
F
Sh
Yom Kippur יום כיפור
Sep 26, 1648
S
M
T
W
T
F
Sh
Sukkos סוכות
Oct 1, 1648
S
M
T
W
T
F
Sh
Hoshana Rabba הושענא רבה
Oct 7, 1648
S
M
T
W
T
F
Sh
Shemini Atzeres שמיני עצרת
Oct 8, 1648
S
M
T
W
T
F
Sh
Simchas Torah שמחת תורה
Oct 9, 1648
S
M
T
W
T
F
Sh
Chanukah חנוכה
Dec 10, 1648
S
M
T
W
T
F
Sh
Tu BiShvat ט״ו בשבט
Jan 28, 1649
S
M
T
W
T
F
Sh
Purim פורים
Feb 26, 1649
S
M
T
W
T
F
Sh
Pesach פסח
Mar 28, 1649
S
M
T
W
T
F
Sh
Shavuos שבועות
May 17, 1649
S
M
T
W
T
F
Sh
17 Tammuz י״ז בתמוז
Jun 27, 1649
S
M
T
W
T
F
Sh
Tisha B'Av תשעה באב
Jul 18, 1649
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 5409

Rosh Hashanah א׳ תשרי
Thursday
Sep 17, 1648
Yom Kippur י׳ תשרי
Saturday
Sep 26, 1648
Sukkos ט״ו תשרי
Thursday
Oct 1, 1648
Hoshana Rabba כ״א תשרי
Wednesday
Oct 7, 1648
Shemini Atzeres כ״ב תשרי
Thursday
Oct 8, 1648
Simchas Torah כ״ג תשרי
Friday
Oct 9, 1648
Chanukah כ״ה כסלו
Thursday
Dec 10, 1648
Tu BiShvat ט״ו שבט
Thursday
Jan 28, 1649
Purim י״ד אדר
Friday
Feb 26, 1649
Pesach ט״ו ניסן
Sunday
Mar 28, 1649
Shavuos ו׳ סיון
Monday
May 17, 1649
17 Tammuz י״ז תמוז
Sunday
Jun 27, 1649
Tisha B'Av ט׳ אב
Sunday
Jul 18, 1649