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| Tu B’Shvat 1820 |  | SUN
30 January 1820 14 Shevat 5580 | MON
31 January 1820 15 Shevat 5580 | | | |
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| Ta’anit Esther 1820 |  | | MON
28 February 1820 13 Adar 5580 | | | |
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| Purim 1820 |  | MON
28 February 1820 13 Adar 5580 | TUE
29 February 1820 14 Adar 5580 | | | |
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| Shushan Purim 1820 |  | TUE
29 February 1820 14 Adar 5580 | WED
1 March 1820 15 Adar 5580 | | | |
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| Pesach 1820 |  | WED
29 March 1820 14 Nissan 5580 | THU
6 April 1820 22 Nissan 5580 | | | |
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| Lag BaOmer 1820 |  | MON
1 May 1820 17 Iyar 5580 | TUE
2 May 1820 18 Iyar 5580 | | | |
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| Shavuot 1820 |  | THU
18 May 1820 5 Sivan 5580 | SHABBAT
20 May 1820 7 Sivan 5580 | | | |
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| Tzom Shiva Asar B'Tammuz 1820 |  | | THU
29 June 1820 17 Tamuz 5580 | | | zomRow |
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| Tzom Tisha B'av 1820 |  | WED
19 July 1820 8 Av 5580 | THU
20 July 1820 9 Av 5580 | | | zomRow |
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| Rosh Hashanah 1820 |  | FRI
8 September 1820 29 Elul 5580 | SUN
10 September 1820 2 Tishrei 5581 | | | |
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| Tzom Gedaliah 1820 |  | | MON
11 September 1820 3 Tishrei 5581 | | | |
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| Yom Kippur 1820 |  | SUN
17 September 1820 9 Tishrei 5581 | MON
18 September 1820 10 Tishrei 5581 | | | |
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| Sukkot 1820 |  | FRI
22 September 1820 14 Tishrei 5581 | FRI
29 September 1820 21 Tishrei 5581 | | | |
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| Shemini Atzeret 1820 |  | FRI
29 September 1820 21 Tishrei 5581 | SHABBAT
30 September 1820 22 Tishrei 5581 | | | |
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| Simchat Torah 1820 |  | SHABBAT
30 September 1820 22 Tishrei 5581 | SUN
1 October 1820 23 Tishrei 5581 | | | |
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| Hanukkah 1820 |  | THU
30 November 1820 24 Kislev 5581 | FRI
8 December 1820 3 Tevet 5581 | | | |
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| Tzom Asara B'Tevet 1820 |  | | FRI
15 December 1820 10 Tevet 5581 | | | |
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