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| Tzom Asara B'Tevet 1640 |  | | THU
5 January 1640 10 Tevet 5400 | | | |
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| Tu B’Shvat 1640 |  | TUE
7 February 1640 14 Shevat 5400 | WED
8 February 1640 15 Shevat 5400 | | | |
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| Ta’anit Esther 1640 |  | | WED
7 March 1640 13 Adar 5400 | | | |
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| Purim 1640 |  | WED
7 March 1640 13 Adar 5400 | THU
8 March 1640 14 Adar 5400 | | | |
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| Shushan Purim 1640 |  | THU
8 March 1640 14 Adar 5400 | FRI
9 March 1640 15 Adar 5400 | | | |
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| Pesach 1640 |  | FRI
6 April 1640 14 Nissan 5400 | FRI
13 April 1640 21 Nissan 5400 | | | |
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| Lag BaOmer 1640 |  | WED
9 May 1640 17 Iyar 5400 | THU
10 May 1640 18 Iyar 5400 | | | |
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| Shavuot 1640 |  | SHABBAT
26 May 1640 5 Sivan 5400 | SUN
27 May 1640 6 Sivan 5400 | | | |
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| Tzom Shiva Asar B'Tammuz 1640 |  | | SUN
8 July 1640 18 Tamuz 5400 | | | zomRow |
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| Tzom Tisha B'av (moved) 1640 |  | SHABBAT
28 July 1640 9 Av 5400 | SUN
29 July 1640 10 Av 5400 | | | zomRow |
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| Rosh Hashanah 1640 |  | SUN
16 September 1640 29 Elul 5400 | TUE
18 September 1640 2 Tishrei 5401 | | | |
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| Tzom Gedaliah 1640 |  | | WED
19 September 1640 3 Tishrei 5401 | | | |
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| Yom Kippur 1640 |  | TUE
25 September 1640 9 Tishrei 5401 | WED
26 September 1640 10 Tishrei 5401 | | | |
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| Sukkot 1640 |  | SUN
30 September 1640 14 Tishrei 5401 | SUN
7 October 1640 21 Tishrei 5401 | | | |
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| Simchat Torah 1640 |  | SUN
7 October 1640 21 Tishrei 5401 | MON
8 October 1640 22 Tishrei 5401 | | | |
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| Hanukkah 1640 |  | SHABBAT
8 December 1640 24 Kislev 5401 | SUN
16 December 1640 3 Tevet 5401 | | | |
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| Tzom Asara B'Tevet 1640 |  | | SUN
23 December 1640 10 Tevet 5401 | | | |
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