Answering "When did?" Calendar Questions in One Step
Stephen P. Morse, San Francisco
with contributions from Owen Leibman




When did (or will) fall on
and come between and ?

Restrict search to xxx years from to
Gregorian Calendar Julian Calendar



   FIXED HOLIDAYS

Jan 1 New Year's Day
Jul 4 Independence Day
Oct 31 Halloween
Nov 11 Veterans Day
Dec 25 Christmas

Tishri 1,2 Rosh Hashanah
Tishri 10 Yom Kippor
Tishri 15-21 Succoth
Tishri 22 Shemini Atzereth
Tishri 23 Simchath Torah
Kislev 25-Tevet 2 or 3 Chanukah
Veadar 14-15 Purim
Nisan 15-22 Pesach
Sivan 6,7 Shavouth
[DC] defective common year   [NC] normal common year   [CC] complete common year
[DL] defective leap year   [NL] normal leap year   [CL] complete leap year
CE Common Era   BCE Before Common Era
Examples of some of the things you can do on this site:

1. Obtain a list of yahrtzeit dates for a range of years
   "When did Sivan 8 fall on any day of the week and come between January 1 and December 31?"
2. Determine when the first day of Chanukah fell on Christmas
   "When did Kislev 25 fall on any day of the week and come between December 25 and December 25?"
3. Determine when Christmas fell anytime during Chanukah (see footnote below)
   "When did December 25 fall on any day of the week and come between Kislev 25 and Tevet 3?"
4. Determine if Yom Kipper ever occurred on a Saturday
   "When did Tishri 10 fall on a Saturday and come between January 1 and December 31?"
5. Determine when Easter fell on the first day of Passover
   "When did Easter fall on any day of the week and come between Nisan 15 and Nisan 15?"
6. Find the last time Rosh Hashanah came in August
   "When did Tishri 1 fall on any day of the week and come between August 1 and August 31?"
   "Restrict search to jewish years from 2000 to 5899"
7. When is Mother's Day this year?
   "When did Mother's Day fall on any day of week and come between Tishri 1 and Elul 29?"
8. Has my birthday ever fallen on a Saturday?
   "When did May 15 fall on a Saturday and come between Tishri 1 and Elul 29?"
9. Has Thanksgiving ever come on or after the first day of Chanukah?
   "When did Thanksgiving fall on any day of the week and come between Kislev 25 and Elul 29?"
10. When is Superbowl Sunday this year?
   "When did Superbowl Sunday fall on any day of week and come between Tishri 1 and Elul 29?"

Footnote to example 3: It's been pointed out to me by Ari Brodsky that this example is not completely correct since Chanukah can end on either Tevet 2 or Tevet 3, depending on how many days are in Kislev that year. So a more accurate, although less intuitive, way of phrasing this query would be "When did Kislev 25 fall on any day of the week and come between December 18 and December 25?"

© Stephen P. Morse, 2008