{"slug":"tammuz-hebrew-calendar","title":"Tammuz (Hebrew calendar)","summary":"Tammuz is the fourth month of the Hebrew religious calendar, primarily known for the Fast of the 17th of Tammuz that commemorates the breaching of Jerusalem's walls and initiates a period of mourning leading to the destruction of the Temple.","content_md":"# Tammuz (Hebrew Calendar)\n\n**Tammuz** (Hebrew: תַּמּוּז, Tammūz) is the fourth month of the Hebrew calendar when counting from Nisan, the religious new year, and the tenth month of the civil year [1][3]. This summer month typically corresponds to parts of June and July in the Gregorian calendar and holds particular significance in Jewish tradition as a time of both historical tragedy and spiritual reflection.\n\nThe month derives its name from ancient Sumerian origins, reflecting the Mesopotamian heritage of the Hebrew calendar system [5]. Like other Hebrew month names, Tammuz was adopted during the Babylonian exile, when the Jewish people incorporated elements of the surrounding culture into their religious and civil practices.\n\n## Position in the Hebrew Calendar\n\nTammuz marks the beginning of the summer season in the Hebrew calendar, initiating a three-month period that includes Tammuz, Av, and Elul [1]. This positioning places it at a crucial juncture in the Jewish year, serving as a bridge between the spring festivals (Passover and Shavuot) and the approaching High Holy Days of autumn (Rosh Hashanah and Yom Kippur).\n\nThe month typically contains 29 days, following the lunar-based structure of the Hebrew calendar. Its dates shift relative to the Gregorian calendar due to the intercalation system used to keep Hebrew months aligned with both lunar cycles and seasonal patterns.\n\n## Historical and Religious Significance\n\nThe most significant observance in Tammuz is the **Fast of the 17th of Tammuz** (Shivah Asar b'Tammuz), which commemorates multiple historical tragedies in Jewish history [1]. The primary event remembered is the breaching of Jerusalem's walls by Roman forces in 69 CE, leading to the destruction of the Second Temple. This fast day initiates the **Three Weeks** period of mourning that culminates with the Fast of the 9th of Av.\n\nAccording to Jewish tradition, several other calamities occurred on the 17th of Tammuz, including Moses breaking the first set of tablets upon discovering the Golden Calf, the cessation of the daily Temple sacrifice during the Roman siege, and the burning of the Torah by the Roman officer Apostomus.\n\nThe month also holds positive associations in some traditions. According to certain sources, the 3rd of Tammuz is connected to the biblical account of Joshua commanding the sun to stand still during battle, allowing the Israelites to achieve victory over their enemies [4]. This event is sometimes interpreted as representing divine intervention and the power of sustained spiritual vision.\n\n## Cultural and Mystical Aspects\n\nIn Jewish mystical tradition, Tammuz is associated with the sense of **sight** and the concept of spiritual vision. This connection stems from the Hebrew root of the month's name and its association with clarity of perception, both physical and spiritual [7]. The month is considered a time for developing deeper insight and understanding, particularly in preparation for the introspective period leading to the High Holy Days.\n\nThe summer timing of Tammuz places it during a period of agricultural abundance in the Land of Israel, when crops reach maturity and the harvest season approaches. This natural cycle parallels the spiritual themes of growth, maturation, and preparation for judgment that characterize this time in the Jewish calendar.\n\n## Modern Observance\n\nContemporary Jewish communities observe Tammuz primarily through the Fast of the 17th of Tammuz and the subsequent Three Weeks period. During this time, traditional Jews refrain from celebrations, weddings, and other joyous activities, focusing instead on mourning, repentance, and spiritual preparation.\n\nThe fast itself involves abstaining from food and drink from dawn to nightfall, accompanied by special prayers and Torah readings that recount the historical events being commemorated. Many communities also engage in increased Torah study and charitable activities during this period.\n\nIn Israel and other Jewish communities worldwide, the month serves as a reminder of historical resilience and the importance of maintaining Jewish identity despite persecution and exile. The juxtaposition of mourning and hope characteristic of Tammuz reflects broader themes in Jewish thought about suffering, redemption, and the ultimate restoration of Jerusalem and the Temple.\n\n## Calendar Variations\n\nLike all Hebrew months, Tammuz follows a lunisolar system that requires periodic adjustments to maintain alignment with the solar year. In leap years of the Hebrew calendar, an additional month (Adar II) is inserted earlier in the year, which can affect the precise Gregorian dates when Tammuz occurs.\n\nThe month's position as the fourth from Nisan reflects the religious calendar established in the Torah, while its designation as the tenth month of the civil year follows the tradition that places Tishrei (containing Rosh Hashanah) as the first month of the civil calendar.\n\n## Related Topics\n\n- Hebrew calendar\n- Fast of the 17th of Tammuz\n- Three Weeks (Jewish mourning period)\n- Av (Hebrew month)\n- Destruction of the Temple\n- Jewish holidays and observances\n- Babylonian calendar influence\n- Jewish calendar months\n\n## Summary\n\nTammuz is the fourth month of the Hebrew religious calendar, primarily known for the Fast of the 17th of Tammuz that commemorates the breaching of Jerusalem's walls and initiates a period of mourning leading to the destruction of the Temple.\n\n\n\n","sources":[{"url":"https://www.chabad.org/library/article_cdo/aid/2263474/jewish/Tammuz.htm","title":"The Hebrew Month of Tammuz - Chabad.org","snippet":"Tammuz (Tamuz) is the fourth of the 12 months of the Jewish calendar, counting from Nisan. The month of Tammuz begins the \"season\" of the summer. The three months of this season are Tammuz, Av and Elul. The 17th day of Tammuz—a fast day that commemorates the day when the walls of Jerusalem were breached by the Romans (in 69 C.E.)—marks the beginning of a period known as \"the Three ..."},{"url":"https://www.chabad.org/calendar/view/month.asp?hdate=4/1&mode=j","title":"Tammuz, 5786 / June - July, 2026 - Jewish Calendar - Hebrew Calendar","snippet":"The most comprehensive and advanced Jewish calendar online. Features a brief summary of key events in Jewish history, laws and customs, Shabbat times and more."},{"url":"https://en.wikipedia.org/wiki/Tammuz_(Hebrew_month)","title":"Tammuz (Hebrew month) - Wikipedia","snippet":"Tammuz (Hebrew month) ... Inscription at the Irish Jewish Museum, with Gregorian and Hebrew dates. Tammuz (Hebrew: תַּמּוּז, Tammūz), or Tamuz, is the tenth month of the civil year and the fourth month of the ecclesiastical year on the Hebrew calendar, and the modern Assyrian calendar."},{"url":"https://www.fusionglobal.org/hebrew-calendar-months/tammuz/","title":"Tammuz: The Month of Vision in the Hebrew Calendar","snippet":"Tammuz: The Month of Vision in the Hebrew Calendar On the 3rd day of this month, the Lord miraculously stopped the sun in its tracks (allowing for sustained vision), allowing Joshua and his armies to deal a decisive blow to their enemies."},{"url":"https://hebrew4christians.com/Holidays/Rosh_Chodesh/Tammuz/tammuz.html","title":"חדש תמוז - Chodesh Tammuz - the Month of Tammuz","snippet":"The name \"Tammuz\" is of Sumerian origin (as are the other names of the months in the Jewish calendar). Since Abraham was the son of a Sumerian priest, it should come as no surprise that Mesopotamia (and later, Babylon) came to be regarded as the ancestral homeland of the Jewish people (Gen. 11:28)."},{"url":"https://www.whenthedate.com/calendars-dates/hebrew.php","title":"Hebrew Calendar 5786 | Tammuz - whenthedate.com","snippet":"View the complete Hebrew (Jewish) calendar for Tammuz 5786 with important Jewish holidays and observances."},{"url":"https://www.curtlandry.com/the-hebrew-month-of-tammuz/","title":"The Hebrew Month of Tammuz | Seeing with Eyes of Faith","snippet":"Here's what to expect in the Hebrew month of Tammuz. It's important to guard your eye gates and see from God's perspective!"},{"url":"https://jcal.com/?hmonth=9&hyear=5785","title":"Tamuz 5785 Hebrew Jewish Calendar - jcal.com","snippet":"Tamuz 5785 Jewish calendar with Jewish holidays, Jewish holidays in this month: Shavuot eve, Shavuot, Shavuot."}],"infobox":{"Type":"Calendar Month","Season":"Summer","Duration":"29 days","Position":"4th month (religious year), 10th month (civil year)","Etymology":"Sumerian origin","Major Observance":"Fast of the 17th of Tammuz","Gregorian Equivalent":"June-July"},"metadata":{"tags":["hebrew-calendar","jewish-holidays","tammuz","jewish-calendar","fast-days","three-weeks","temple-destruction"],"quality":{"status":"generated","reviewed_by":[],"flagged_issues":[]},"category":"Society","difficulty":"intermediate","subcategory":"Religious Calendar"},"model_used":"anthropic/claude-sonnet-4","revision_number":1,"view_count":3,"related_topics":["hebrew-calendar"],"sections":["Tammuz (Hebrew Calendar)","Position in the Hebrew Calendar","Historical and Religious Significance","Cultural and Mystical Aspects","Modern Observance","Calendar Variations","Related Topics","Summary"]}