Case file
12–13 Tammuz
Wikipedia's first sentence called it “celebrated as a holiday by the chabad hasidic community”. Today it says “holiday on the chabad-lubavitch calendar that commemorates the liberation of rabbi yosef yitzchak schneerson”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2020
Chabad holiday Yud Beis–Yud Gimmel Tammuz , the 12th and 13th days of Tammuz on the Hebrew calendar, are celebrated as a holiday by the Chabad Hasidic community. The holiday commemorates the liberation of Rabbi Yosef Yitzchak Schneersohn , the sixth Chabad Rebbe , from Soviet imprisonment. Schneersohn was born June 21, 1880 (12 Tammuz 5640). The day is marked by public gatherings, additional study and prayer.1
This is Wikipedia's own text, saved in our repository. Their copy of it is revision 886482861.
Today
Wikipedia's first sentence called it “celebrated as a holiday by the chabad hasidic community”. Today it says “holiday on the chabad-lubavitch calendar that commemorates the liberation of rabbi yosef yitzchak schneerson”. Read the current article and compare.
| 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 2015, and today's defining sentence is their current revision.
Then
celebrated as a holiday by the chabad hasidic community
Now
holiday on the chabad-lubavitch calendar that commemorates the liberation of rabbi yosef yitzchak schneerson
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.