Wikipedia's first sentence called it “half-day”. Today it says “jewish fast day commemorating the breach of the walls of jerusalem before the destruction of the second temple”.
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Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2005
Seventeenth of Tammuz , the seventeenth day on the Hebrew calendar month of Tammuz , is a half-day ( dawn to dusk ) fast in Judaism . The fast commemorates different calamities that occurred. Jewish tradition teaches that on this day, the final protective walls of ancient Jerusalem were pierced by Rome , leading to the destruction of the Second Temple . Also, the Temple sacrifices were stopped and the tablets of the Ten Commandments were broken by Moses . It is the second in the Four Fasts commemorating the destruction of the the Temple and the Jewish Exile. It is preceded by the fast of Tenth of Tevet seven months earlier, begins the three weeks before full-day fast of the Ninth of Av . The last of the four fasts is the Fast of Gedalia immediately following Rosh Hashanah . The three weeks between the Seventeenth of Tamuz and the Ninth of Av are in themselves known as the Three Weeks , also known as bein hametzarim ("between the straits"), of a mounting sense of mourning for Jerusalem's and the Temples' destructions.1
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 16456936.
The opening as it stood in 2010 8 passages from the previous snapshot no longer appear
The Seventeenth of Tammuz ( , Shiv'ah Asar b'Tammuz ) is a minor Jewish fast day commemorating the breach of the walls of Jerusalem before the destruction of the Second Temple .It falls on the seventeenth day of the Hebrew month of Tammuz and marks the beginning of the three-week mourning period leading up to Tisha B'Av .The day also commemorates the destruction of the Twin Tablets of the Ten Commandments .The Seventeenth of Tammuz occurs forty days following the holiday of Shavuot.Moses ascended Mount Sinai and remained up there those forty days.The Children of Israel built 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, and smashed the tablets.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 370804624.
The opening as it stood in 2015 1 passage from the previous snapshot no longer appear
The Seventeenth of Tammuz ( , Shiv'ah Asar b'Tammuz ) is a Jewish fast day commemorating the breach of the walls of Jerusalem before the destruction of the Second Temple . It falls on the 17th day of the Hebrew month of Tammuz and marks the beginning of the three-week mourning period leading up to Tisha B'Av . This day also commemorates the destruction of the Twin Tablets of the Ten Commandments . 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.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 647327735.
The opening as it stood in 2020 4 passages from the previous snapshot no longer appear
(c. 1630–1660) The Seventeenth of Tammuz ( Shivah Asar b'Tammuz ) is a Jewish fast day commemorating the breach of the walls of Jerusalem before the destruction of the Second Temple . It falls on the 17th day of the 4th Hebrew month of Tammuz and marks the beginning of the three-week mourning period leading up to Tisha B'Av . 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.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 918214609.
The opening as it stood on October 6, 2023
Jewish fast day Nebuchadnezzar's army burns Jerusalem . (c. 1630–1660) The Seventeenth of Tammuz ( ) is a Jewish fast day commemorating the breach of the walls of Jerusalem before the destruction of the Second Temple . It falls on the 17th day of the 4th Hebrew month of Tammuz and marks the beginning of the three-week mourning period leading up to Tisha B'Av . 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.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1176920662.
The opening as it stood in 2025
Jewish fast day 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 .It falls on the 17th day of the fourth Hebrew month of Tammuz and marks the beginning of The Three Weeks , a mourning period leading up to Tisha B'Av . 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.
Red text was written in or rewritten since the previous snapshot. Their copy is revision 1289031830. This is our newest snapshot; the live article may have moved again since.
Today
Wikipedia's first sentence called it “half-day”. Today it says “jewish fast day commemorating the breach of the walls of jerusalem before the destruction of the second temple”. Read the current article and compare.
2005
2010
2015
2020
Oct '23
2025
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What Wikipedia says this is
Every article opens by defining its subject. This one was redefined since 2005, and today's defining sentence is their current revision.
Then
half-day
Now
jewish fast day commemorating the breach of the walls of jerusalem before the destruction of the second temple
Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.
