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Seventeenth of Tammuz

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Selichot for 17 Tammuz in a 1724 illuminated book.

Seventeenth of Tammuz
Official nameHebrew: שבעה עשר בתמוז
TypeJewish religious and national
SignificanceDate when the walls of Jerusalem were breached
ObservancesFasting, prayer
Date17th day of Tammuz
2025 date13 July[1]
2026 date2 July[1]
2027 date22 July[1]
2028 date11 July[1]
Related toThe fasts of the Tenth of Tevet and Tisha B'Av, the Three Weeks and the Nine Days
Nebuchadnezzar's army burns Jerusalem. (c. 1630–1660)

The Seventeenth of Tammuz (Biblical Hebrew: שִׁבְעָה עָשָׂר בְּתַמּוּז‎, Modern: Shiv'á Asár beTammúz, Tiberian (SBL): Šib̲ʿāʿāśār bəṯammuz) is a Jewish fast day commemorating the breach of the walls of Jerusalem before the destruction of the Second Temple.[2][3] It falls on the 17th day of the Hebrew month of Tammuz, the fourth month, and marks the beginning of The Three Weeks, a mourning period leading up to Tisha B'Av.[4]

The day also traditionally commemorates the destruction of the two tablets of the Ten Commandments and other historical calamities that befell the Jewish people on the same date.[2]

History

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"The Siege and Destruction of Jerusalem by the Romans Under the Command of Titus, A.D. 70" by David Roberts (1850)

The fast of Tammuz, according to Rabbi Akiva's interpretation, is the fast mentioned in the Book of Zechariah as "the fast of the fourth [month]" (Zechariah 8:19). This refers to Tammuz, which is the fourth month of the Hebrew calendar.

According to the Mishnah,[2] five calamities befell the Jewish people on this day:

  1. Moses broke the two tablets of stone on Mount Sinai, when he saw the Golden calf;[5]
  2. During the Babylonian siege of Jerusalem the daily tamid offering ceased to be brought because no sheep were available;
  3. During the Roman siege of Jerusalem, the city walls were breached, leading to the destruction of the Second Temple on Tisha B'Av;
  4. Prior to Bar Kokhba's revolt, Roman military leader Apostomus burned a Torah scroll;
  5. An idol was erected in the Temple.

The Babylonian Talmud places the second and fifth tragedies in the First Temple period.[6]

The Book of Jeremiah (39.2, 52.6–7) states that the walls of Jerusalem during the First Temple were breached on the 9th of Tammuz. Accordingly, the Babylonian Talmud dates the third tragedy (breach of Jerusalem's walls) to the Second Temple period.[6] However, the Jerusalem Talmud (Taanit IV, 5) states that in both eras the walls were breached on 17th Tammuz, and that the text in Jeremiah 39 is explained by stating that the Biblical record was "distorted", apparently due to the troubled times.[7]

The Seventeenth of Tammuz occurs forty days after the Jewish holiday of Shavuot. Moses ascended Mount Sinai on Shavuot and remained there for forty days. The Children of Israel made the Golden Calf on the afternoon of the sixteenth of Tammuz when it seemed that Moses was not coming down when promised. Moses descended the next day (forty days by his count), saw that the Israelites were violating many of the laws he had received from God, and smashed the tablets.[8]

Customs

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As a minor fast day, fasting lasts from dawn to shortly after dusk. It is customary among Ashkenazi Jews to refrain from listening to music, public entertainment, and haircuts on fast days, and on this occasion because it is also part of The Three Weeks (see below, Bein haMetzarim).[9] Other deprivations applicable to the major fasts (i.e. Yom Kippur and Tisha B'Av) do not apply.[10]

If the 17th of Tammuz falls on a Shabbat, the fast is instead observed the next day, the 18th of Tammuz (on Sunday).[11] This last occurred in 2022, and will occur again in 2029.

A Torah reading, a special prayer in the Amidah (Aneinu), and in many, but not all, Ashkenazic communities Avinu Malkenu are added at the morning Shacharit and afternoon Mincha services. Ashkenazi congregations also read a haftarah (from the Book of Isaiah) at Mincha. Congregations also recite during Shacharit a series of Selichot (special penitential prayers) reflecting the themes of the day.[12]

Cycle of fasts

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The 17th of Tammuz is the second of the four fasts commemorating the destruction of the Temple and the Jewish exile in Babylon. It is preceded by the fast of the Tenth of Tevet and arrives three weeks prior to the 25 hour fast of the Ninth of Av.[12] The cycle is also associated historically with the Fast of Gedalia, which is observed on the third day of Tishrei.[13]

Bein haMetzarim

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The three weeks beginning with the Seventeenth of Tammuz are known as Bein haMetzarim ("between the straits", i.e. between the days of distress), or The Three Weeks, and serve as an annual period of communal sorrow ending on the fast day of Tisha B'Av — described as "the saddest day in the Jewish calendar" — which is dedicated to remembering and mourning the destruction in Jerusalem of Solomon's Temple in 586 BCE and of the Second Temple in 70 CE.[14][15][16] Some customs of mourning, which commemorate the destruction of Jerusalem, are observed from the start of the Three Weeks, particularly for Ashkenazi Jews, while many Sephardic Jews begin the customs on the First of Av.[17][18]

The oldest extant reference to these days as Bein haMetzarim – which is also the first source for a special status of The Three Weeks – is found in Eikhah Rabbati 1.29 (Lamentations Rabbah, fourth century CE?). This midrash glosses Lamentations 1:3, "All [Zion's] pursuers overtook her between the straits."

The three weeks of mourning between the 17th of Tammuz and 9th of Av is cited[19] as a rabbinically instituted period of fasting for the "especially pious". Such fasting is observed from morning to evening, common with other rabbi-decreed fasts.[20]

References

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  1. 1 2 3 4 "Dates for Tzom Tammuz". Hebcal.com by Danny Sadinoff and Michael J. Radwin (CC-BY-3.0). Retrieved August 26, 2018.
  2. 1 2 3 Mishnah Ta'anit 4:6  – via Wikisource.
  3. ↑ "Minor Fasts". Jewish Virtual Library. Retrieved June 2, 2017.
  4. ↑ "The Three Weeks: Mourning the Destruction". Torah.org. 2007. Retrieved July 8, 2012.
  5. ↑ When Moses descended from the mountain, he saw the letters engraved on the Tablets ascending. Therefore he broke the Tablets (Tanchuma, Ki Tissa #26). Moses made a great rectification. When he saw the letters ascending, he realized that sanctity was returning on high and that Godliness was becoming concealed again. By breaking the Tablets, Moses made sure that people would have to search for Godliness. And if they search, they will find it (Likutey Halakhot III, p. 33a)
  6. 1 2 Taanit 28b
  7. ↑ The Roman Titus breached Jerusalem in the Second Temple period (Encyclopedia Judaica). Note that the Tosafot commenting on the Babylonian Talmud at Rosh Hashana 18b cite the Jerusalem Talmud as arguing with the Babylonian Talmud.
  8. ↑ Rubin, Rabbi G. (2001). "The Giving of the Torah". Ohr.edu. Retrieved May 28, 2009.
  9. ↑ "Laws and Customs: 17 Tammuz and the 3 Weeks". Crownheights.info. July 14, 2014. Retrieved July 1, 2018.
  10. ↑ Shulchan Aruch OC 550:2.
  11. ↑ "Fast of Tammuz | United Synagogue". www.theus.org.uk. Archived from the original on January 12, 2022. Retrieved January 12, 2022.
  12. 1 2 "17th of Tammuz: History, Laws and Customs - >". Archived from the original on July 12, 2017. Retrieved July 10, 2017.
  13. ↑ "Zechariah 8:19". www.sefaria.org. Retrieved August 15, 2024.
  14. ↑ Rimon, Yosef Tzvi (July 31, 2025). "Mourning the destruction of the Temples on Tisha B'Av 2025: Special guidelines when the fast falls on Saturday night". Ynetnews. Retrieved August 3, 2025.
  15. ↑ Jonathan Sacks. "The Three Weeks and Tisha B'Av", RabbiSacks.org. Accessed June 28, 2026. "The period known as the Three Weeks (also known in Hebrew as Bein ha-Metzarim – 'Between the Straits/days of distress') is the saddest period in the Jewish calendar. Customs of mourning are observed during this time to commemorate the destruction of the First and Second Temples.... Tisha B'Av: This is the saddest day in the Jewish calendar, when the destruction of both the First and Second Temples is commemorated.... The First Temple, built by King Shlomo, was destroyed by the Babylonian King Nebuchadnezzar in 586 BCE, and the population of the Kingdom of Judah was sent into exile. The Second Temple was destroyed by the Romans in 70 CE, scattering the people of Judea and signifying the beginning of a two-thousand-year exile."
  16. ↑ Shurpin, Yehuda. 'What You Need to Know About the 'Three Weeks'", Chabad.org. Accessed June 28, 2026. "The Three Weeks, beginning on the 17th of Tammuz and concluding with the 9th of Av (Tisha B’Av), are a solemn period of mourning that commemorates a series of tragic events in Jewish history, primarily the destruction of the First and Second Temples in Jerusalem."
  17. ↑ "17th of Tammuz". Aish.com. June 19, 2002. Archived from the original on August 15, 2018. Retrieved July 1, 2018.
  18. ↑ The Customs of the Three Weeks, Peninei Halakha. Accessed July 1, 2026. "There are other customs of mourning that various communities have adopted. Ashkenazim and some Sephardim, including Jews from Morocco and Djerba, refrain from cutting their hair during the Three Weeks. Other Sephardim are strict about this only during the week of Tisha Be-Av. Ashkenazim, Yemenites, and most Sephardim do not conduct weddings during the Three Weeks. Other Sephardim are more lenient, only avoiding weddings from the beginning of the month of Av (see below, section 7)."
  19. ↑ Encyclopaedia Judaica, Second Edition, Volume 6. "Fasting and Fast Days". 2007. Keter Publishing House.
  20. ↑ Yosef, Rabbeinu Ovadia. "The "Three Weeks" 5785- The Words of Maran zt"l : Daily Halacha Based on the Rulings of Maran Rabbeinu Ovadia Yosef". halachayomit.co.il. Retrieved July 15, 2025.
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