Palindrome Dates (Palindrome Days) in the 19th, 20th, 21st, 22nd, and 23rd Centuries

  • A. S. Inan and Farmers' Almanac Staff, "What Is The Next Palindrome Date?," Farmers' Almanac, Lewiston, Maine, March 20, 2023.
  • A. S. Inan, "11:11 - Good Luck And History!," Farmers' Almanac, Lewiston, Maine, November 8, 2022.
  • M. Marples, "Happy Twosday! Don't miss out celebrating the coolest date of the decade," CNN.com, CNN Media Company, Atlanta, Georgia, February 22, 2022.
  • R. Treisman, "Today is 2-22-22...and a Tuesday. Here's how to celebrate the rare date," National Public Radio (NPR), Washington, DC, February 22, 2022.
  • J. D. Avila, "Twosday's Many, Many (Too Many?) Twos," Wall Street Journal (WSJ), New York, New York, February 22, 2022.
  • D. B. Krishnan, "Palindromes maketh miracle month," New Straits Times (NST), Kuala Lumpur, Malaysia, February 21, 2022.
  • H. Barndollar, "Lucky number 2: 'Twosday' 2-22-22 is big for weddings," Providence Journal, USA Today Network, Providence, Rhode Island, February 17, 2022.
  • A. S. Inan, "Happy palindrome birthday to Oregon City's Delores Ferrante," Clackamas Review, Vol. 101, Issue 6, p. A6, Portland, Oregon, February 9, 2022.
  • A. Roby, "School registration underway (February 2022 is full of palindromes)," The Record Courier, Gardnerville, Nevada, February 4, 2022.
  • M. Zurowski, "Today is "Twosday" or 22-02-2022, a perfect palindrome," Calgary Herald, Calgary, Canada, February 2, 2022 and February 22, 2022.
  • M. Mayntz and A. S. Inan, "Palindrome Dates in 2022: February Wins," Farmers' Almanac, Lewiston, Maine, January 18, 2022; updated as "This Week Is Full Of Palindrome Dates", February 25, 2022.
  • A. S. Inan, "Letter: Interesting numbers, by George," The Columbian, Vancouver, Washington, December 24, 2021.
  • A. S. Inan, "Opinion: 97th anniversary of the opening of the Hood River Bridge was a palindrome date," Columbia Gorge News, Volume 2, Issue 37, p. 5, Hood River/The Dalles/White Salmon, Oregon, December 15, 2021.
  • A. Roby, "Palindrome patterns please the eye," The Record Courier, Gardnerville, Nevada, December 2, 2021 (12/02/2021).
  • J. Cannon, "Today's date is rare: It reads the same way forward, backward and upside down," USA Today, McLean, Virginia, December 2, 2021 (12/02/2021).
  • M. Williamson (A. S. Inan), "Prof Marks Spears' 40th With Math," Enterprise-Journal, McComb, Mississippi, December 2, 2021 (12/02/2021).
  • C. Clarridge, "Digiphiles, delight! A rare stretch of palindrome days has begun," The Seattle Times, Seattle, Washington, December 1, 2021.
  • A. S. Inan, "Numbers don't lie; they do, occasionally, amuse," Portland Tribune, Portland, Oregon, January 6, 2021.
  • A. S. Inan and S. Higgins, "2021: A Special Year For Palindrome Dates, Starting This Month!," Farmers' Almanac, Lewiston, Maine, January 15, 2021.
    B. E. Inan, "Palindrome dates in 2021 Image # 1 (22 palindrome dates; double palindrome weeks; 1/20/2021 & 12/02/2021)," "Palindrome dates in 2021 Image # 2 (1/20/2021 & 12/02/2021)," "Palindrome dates in 2021 Image # 3 (22 palindrome dates; double palindrome weeks; 1/20/2021 & 12/02/2021)," "Palindrome dates in 2021 Image # 4 (22 palindrome dates; double palindrome weeks; 1/20/2021 & 12/02/2021)," "Palindrome dates in 2021 Image # 5 (22 palindrome dates; double palindrome weeks)," January 2, 2021 (2/1/21).
  • M. Singer, "University of Portland Professor Aziz Inan Believes Numbers Can Be Art, Especially Palindrome Dates," Willamette Week, Portland, Oregon, July 22, 2020.
  • D. Sparks, "What's so special about Sunday's palindrome date? (02/02/2020)," The Register-Guard, Eugene, Oregon, February 1, 2020.
  • J. Shannon, "Sunday's date is a rare palindrome that hasn't happened in over 900 years," USA Today, Tysons Corner, Virginia, February 1, 2020.
  • S. Jackson, "Super Bowl Sunday, Groundhog Day Will Be Very Rare Palindrome Date," NBC Universal, New York City, New York, February 1, 2020.
  • B. Guarino, "Sunday's date is a rare, extra-special palindrome," Washington Post, Washington, D.C., January 31, 2020.
  • D. Perry, "Super Bowl Sunday is a big day for a Portland professor--because he’s a palindrome expert," oregonlive.com, The Oregonian, Portland, Oregon, January 31, 2020.
  • NBCUniversal reporters (A. S. Inan), "It's Palindrome Week (But Not the Last One of the Century)," NBCUniversal, New York City, New York, September 10, 2019 (9/10/2019).
  • A. S. Inan, "Sept. 10, 2019, palindrome offers a little magic," Portland Tribune, Portland, Oregon, September 10, 2019 (9/10/2019).
  • C. Wicks (A. S. Inan), "Sept. 1 is first of 11 palindrome dates this month," koin.com, CBS KOIN 6 News, Portland, Oregon, September 1, 2019 (9/1/19).
    "Palindrome Day 9/01/2019 (9102019) Image # 1," "Palindrome Day 9/01/2019 (9102019) Image # 2," "Palindrome Day 9/01/2019 (9102019) Image # 3," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 1," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 2," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 3," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 4," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 5," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 6," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 7," "Ubiquitous Palindrome Day 02/02/2020 (02022020) Image # 8," "Palindrome Groundhog Day 02/02/2020 (02022020) Image," September 10, 2019 (9102019).
  • A. S. Inan, "Lincoln's birthday numbers a prime tribute to great president," Portland Tribune, Portland, Oregon, February 12, 2019.
  • Reeve staff (A. S. Inan), "Christopher Reeve Birthday Palindrome," christopherreeve.org blog, Christopher & Dana Reeve Foundation, Short Hills, New Jersey, September 28, 2018.
  • A. S. Inan, "Happy Palindrome Day (Date), August 10, 2018 (8/10/2018), the 222nd day of 2018 and the 11th Palindrome Day (Date) of the 21st Century! (Image # 1),"
    "11 Palindrome Days (Dates) in August 2018 based on Month/Day/Year date format (Image # 2)," "4 Palindrome Days (Dates) in 2018 based on Day/Month/Year date format and Happy Palindrome Day (Date), 8 October 2018 (8/10/2018)! (Image # 3)," published by M. Furman as "8-1-18 the first of 11 palindrome dates this month," kval.com, KVAL News, Eugene, Oregon,
    also published as "8/1/18 the first of 11 palindrome dates this month," katu.com, KATU 2 News, Portland, Oregon,
    also published as "8-1-18: the first of 11 palindrome dates this year," koin.com, CBS KOIN 6 News, Portland, Oregon,
    also published as "8/1/18 the first of 11 palindrome dates this month," kcby.com, KCBY CBS 11 News, North Bend, Oregon,
    also published as "8/1/18 the first of 11 palindrome dates this month," nbc16.com, KMTR NBC 16 News, Eugene, Oregon, all on August 1, 2018 (8/1/18).
  • A. S. Inan, "Palindrome Day 7/10/2017 is the 191st day!," July 10, 2017 (7/10/2017 or 7102017); "Q&A on the News," The Atlanta Journal-Constitution, METRO section, p. B3, Atlanta, Georgia, July 16, 2017 (7/16/17).
    "Palindrome Day 7/10/2017 (7102017) Image # 1," "Palindrome Day 7/10/2017 (7102017) Image # 2," "List of Two-Digit Year Number Palindrome Dates (Month/Day/Year date format) (2001-2045)," "List of Two-Digit Year Number Palindrome Dates (Month/Day/Year date format) (2046-2100)," "List of Two-Digit Year Number Palindrome Dates (Day/Month/Year date format) (2001-2045)," "List of Two-Digit Year Number Palindrome Dates (Day/Month/Year date format) (2046-2100)"
  • A. S. Inan, "11 Palindrome Dates in June 2016," June 10, 2016 (6-10-2016, or simply, 6102016).
    "11 Palindrome Dates in June 2016 Image # 1," "11 Palindrome Dates in June 2016 Image # 2," "11 Palindrome Dates in June 2016 Image # 3," "11 Palindrome Dates in June 2016 Image # 4 (WallillaW)" (all by B. E. Inan & A. S. Inan) (June 10, 2016 or 6102016)
  • A. S. Inan, "Happy 110th Birthday, Henry Fonda! (5-16-2015)," April 21, 2015.
  • A. S. Inan, "Palindrome Mother's Day in 2015 (May 10, 2015, or 5-10-2015, or simply, 5102015)," April 24, 2015.
    "Palindrome Mother's Days List in Four-Digit Years"," "Palindrome Mother's Days List in Four-Digit Years"," "Palindrome Day Sequence in May 2015" Interactive Animation," "Palindrome Mother's Day 5102015" Image," "Palindrome Mother's Day 5102015" Image," "Palindrome Mother's Day 5102015" Image # 2," "Palindrome Mother's Day 5102015" Image # 2," "Palindrome Mother's Day 5102015" Image # 3," "Palindrome Mother's Day 5102015" Image # 3," "Palindrome Mother's Day 5102015" Image # 4," "Palindrome Mother's Day 5102015" Image # 4," "Palindrome Mother's Day 5102015" Image # 5," "Palindrome Mother's Day 5102015" Image # 5," "Palindrome Mother's Day 5102015" Image # 6," "Palindrome Mother's Day 5102015" Image # 6," "Palindrome Mother's Day 5102015" Image # 7," "Palindrome Mother's Day 5102015" Image # 7," "11 Palindrome Dates in May 2015" (5-1-15, 5-10-15 (5-10-2015), 5-11-15, 5-12-15, 5-13-15, ..., 5-19-15)
  • A. S. Inan, "World Animal Day is a Palindrome Day!," (4-10-2014, or simply, 4102014) 4 October 2014.
    "Palindrome World Animal Day" Image (4-10-2014, or simply, 4102014)"
  • A. S. Inan, "Bob Hope Turns 111," The Tolucan Times, Toluca Lake, Los Angeles, California, June 5, 2014.
  • A. S. Inan, "Bob Hope Turns 111 (Happy 111th Birthday, Bob Hope!)," (5-29-2014, or simply, 5292014) May 29, 2014.
    "Bob Hope Turns 111" Image # 1 (5-29-2014, or simply, 5292014)," "Bob Hope Turns 111" Image # 2 (5-29-2014, or simply, 5292014)"
  • D. Dailey, "Today is one of century's 38 palindrome days," Santa Barbara News-Press, p. A4, Santa Barbara, California, April 10, 2014 (4-10-2014, or simply, 4102014).
  • A. S. Inan, "100th Day of 2014 is a Palindrome Day," April 10, 2014 (4-10-2014, or simply, 4102014).
    "The 100th Day of 2014 is a Palindrome Day (Date) Image # 1 (April 10, 2014, or 4-10-2014, or 4102014)," "The 100th Day of 2014 is a Palindrome Day (Date) Image # 2 (April 10, 2014, or 4-10-2014, or 4102014)," "The 100th Day of 2014 is a Palindrome Day (Date) Image # 3 (April 10, 2014, or 4-10-2014, or 4102014)," "Palindrome April Fools' Dates (Days) Image # 1 (April 1, 2014, or 4-1-14, or 4114)," "Palindrome April Fools' Dates (Days) Image # 2 (April 1, 2014, or 4-1-14, or 4114)," "Palindrome April Fools' Dates (Days) Image # 3 (April 1, 2014, or 4-1-14, or 4114)," "Palindrome April Fools' Dates (Days) Image # 4 (April 1, 2014, or 4-1-14, or 4114)," "Palindrome April Fools' Dates (Days) Image # 5 (April 1, 2014, or 4-1-14, or 4114)," "The 98th Anniversary of the Foundation of the Professional Golfers' Association (PGA) of America is a Palindrome Day (Date) Image # 1 (April 10, 2014, or 4-10-2014, or 4102014)"
  • A. S. Inan, "The 23rd Anniversary of the German Unity Day (Tag der Deutschen Einheit) is a Palindrome Day," The Beacon, Vol. 115, Issue No. 6 (online version), University of Portland, Portland, Oregon, October 3, 2013; "German Unity Day is also a Palindrome Day," Munich NOW, Munich, Germany, October 3, 2013; "Germans celebrate once-in-a-lifetime holiday," The Local-Germany's News in English, Berlin, Germany, October 3, 2013.
  • A. S. Inan, "The 23rd Anniversary of the German Unity Day (Tag der Deutschen Einheit) is a Palindrome Day," 3 October 2013 (3-10-2013 or 3102013).
  • A. S. Inan, "Der 23ste Jahrestag der deutschen Einheit ist ein Palindromtag," (translated by Karl Groneman,) 3 October 2013 (3-10-2013 or 3102013).
    "Palindrome German Unity Day 3102013 Image # 1," "Palindrome German Unity Day 3102013 Image # 2," "Palindrome German Unity Day 3102013 Image # 3," "Palindrome German Unity Day 3102013 Image # 4," "Palindrome German Unity Day 3102013 Image # 5," "Palindrome German Unity Day 3102013 Image # 6," "Palindrome German Unity Day 3102013 Image # 7," "Palindrome German Unity Day 3102013 Image # 8"
  • A. S. Inan, "Happy 134th Palindrome Pi Day Birthday, Albert Einstein!," March 14, 2013 (3-14-13 or simply 31413).
    "Palindrome Pi Day Image # 1 (3-14-13 or 31413)," "Palindrome Pi Day Image # 2 (3-14-13 or 31413)," "Palindrome Pi Day Image # 3 (3-14-13 or 31413)"
  • A. S. Inan, "Palindromes Coincide in Mitt Romney's Palindrome Birthdays," March 12, 2013 (3-12-2013 or 3122013).
  • A. S. Inan, "Happy 55th Double-Palindrome Birthday, Sharon Stone!," March 10, 2013 (3-10-2013 or simply 3102013).
    "Sharon Stone 55th Palindrome Birthday Image # 1 (3-10-2013 or 3102013)," "Sharon Stone 55th Palindrome Birthday Image # 2 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 1 (3-10-2013 or 3102013)," "Sharon Stone 55th Palindrome Birthday Image # 3 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 1 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 2 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 3 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 4 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 5 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 6 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 7 (3-10-2013 or 3102013)," "Palindrome Date (Day) Image # 8 (3-10-2013 or 3102013)"
  • A. S. Inan, "Mahatma Gandhi's 143rd Palindrome Birthday is Special," India West, p. A6, October 12, 2012.
  • A. S. Inan, "Mahatma Gandhi's 143rd palindrome birthday is special," The Beacon, Vol. 114, Issue No. 6, p. 12, University of Portland, Portland, Oregon, October 4, 2012.
  • S. Diwan, "American professor pays numerical tribute to Mahatma," (in Marathi language), The jpeg version of "American professor pays numerical tribute to Mahatma," The pdf version of "American professor pays numerical tribute to Mahatma," English translation of "American professor pays tribute to Mahatma," Daily Lokmat, Maharashtra, India, October 2, 2012 (2-10-2012 or 2102012).
  • A. S. Inan, "Mahatma Gandhi's 143rd Palindrome Birthday is Special," 2 October 2012 (simply 2-10-2012 or 2102012).
    "Mahatma Gandhi's 143rd Palindrome Birthday Image # 1 (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 1 (pdf version) (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 2 (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 2 (pdf version) (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 3 (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 3 (pdf version) (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 4 (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 4 (pdf version) (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 5 (2-10-2012 or 2102012)," "Mahatma Gandhi's 143rd Palindrome Birthday Image # 5 (pdf version) (2-10-2012 or 2102012)"
  • A. S. Inan, "21 February 2012 (21-02-2012)-11th Palindrome Day of the 21st Century," 21 February 2012 (21022012).
    List of First 30 Palindrome Dates in the 21st Century (21-02-2012), The pdf version of the "List of First 30 Palindrome Dates in the 21st Century," Palindrome Dates in 2012 - 21-02-2012 (or 21022012) and 2-10-2012 (or 2102012), The pdf version of the "Palindrome Dates in 2012 - 21-02-2012 (or 21022012) and 2-10-2012 (or 2102012)," Palindrome Dates in 2012 - 21-02-2012 (or 21022012) and 2-10-2012 (or 2102012) (Turkish version), The pdf version of the "Palindrome Dates in 2012 - 21-02-2012 (or 21022012) and 2-10-2012 (or 2102012) (Turkish version)"
  • A. S. Inan, "Happy Palindrome Valentine's Day Birthday Tom and Jerry," February 14, 2012 (2-14-12).
    February 14, 2012 Palindrome Valentine's Day - 2-14-12 (21412) - Image, The pdf version of the "February 14, 2012 Palindrome Valentine's Day - 2-14-12 (21412) - Image"
  • A. S. Inan, "February 10, 2012 (2-10-2012)-Fifth Palindrome Day of the 21st Century!," published by S. L. Cheesman as "Did you know that 2-10-12 is a palindrome day?," katu.com, KATU News, February 10, 2012.
    February 10, 2012 Palindrome Day - 2-10-2012 (2102012) - Image, The pdf version of the "February 10, 2012 Palindrome Day - 2-10-2012 (2102012) - Image"
  • A. S. Inan, "22nd Palindrome Day is November 22nd!," published as "The unique mathematical properties of November 22," katu.com, KATU News, November 22, 2011.
    November 22, 2011 Palindrome Day - 11-22-11 (112211) - Image#1, November 22, 2011 Palindrome Day - 11-22-11 (112211) - Image#2
  • A. S. Inan, "Salute to a Once-A-Century Repunit Palindrome Day--11-11-11!," (updated version), in S. Gilmore, "11/11/11: One little number adds up to a lot," Seattle Times, Seattle, Washington, November 11, 2011.
  • A. S. Inan, "More Facts about Palindrome Day, November 2, 2011--11022011!," (October 28, 2011), published as "11022011: Only palindrome day for a century," katu.com, KATU News, November 2, 2011.
  • A. S. Inan, "November 2, 2011 is a one-of-a-kind palindrome," The Beacon, Vol. 113, Issue No. 5, p. 13, University of Portland, Portland, Oregon, September 29, 2011.
    November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#1, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#2, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#3, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#4, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#5, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#6, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#7, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#8, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#9, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#10, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#11, November 2, 2011 Palindrome Day - 11-02-2011 (11022011) - Image#12
  • A. S. Inan, "Palindrome Dates in 2011," The Beacon, Vol. 112, Issue No. 8, pp. 12 & 13, University of Portland, Portland, Oregon, October 28, 2010.
  • A. S. Inan, "Palindrome Dates in Four-Digit Years," Pi in the Sky, Issue No. 14, pp. 5-8, Pacific Institute of Mathematical Sciences (PIMS), University of Victoria, Victoria, BC, Fall 2010.
  • A. S. Inan, "Finding joy in turning 55, palindrome b-day," The Beacon, Vol. 111, Issue No. 22, pp. 11 & 12, University of Portland, Portland, Oregon, March 31, 2010.
  • A. S. Inan, "Twelve Palindrome Dates in 21st Century," The Beacon, Vol. 111, Issue No. 11, pp. 11 & 13, University of Portland, Portland, Oregon, November 19, 2009. (Note that this article only covers eight-digit palindrome calendar dates and does not include the existence of seven- or six-digit ones.)

    2011 Double Palindrome Dates Image in the Day/Month/Year Date Format-11 February 2011 (11022011) and 1 October 2011 (1102011)

    image of double palindrome dates in 2011

    2011 Double Palindrome Dates Image in the Month/Day/Year Date Format-January 10, 2011 (1102011) and November 2, 2011 (11022011)

    image of double palindrome dates in 2011

    Double Palindrome Calendar Dates in 2011: 11 February 2011 (11022011) and 1 October 2011 (1102011) (English version, by Dr. Aziz Inan)

    Double Palindrome Calendar Dates in 2011: 11 February 2011 (11022011) and 1 October 2011 (1102011) (Turkish version, by Dr. Aziz Inan)

    February 1, 2010 (01022010) Calendar Palindrome Part 1 of 2 (English version, by Dr. Aziz Inan)

    February 1, 2010 (01022010) Calendar Palindrome Part 2 of 2 (English version, by Dr. Aziz Inan)

    February 1, 2010 (01022010) Calendar Palindrome Part 1 of 2 ( Turkish version, by Dr. Aziz Inan)

    February 1, 2010 (01022010) Calendar Palindrome Part 2 of 2 ( Turkish version, by Dr. Aziz Inan)

    January 2, 2010 Palindrome - 01022010

    January 2, 2010 Palindrome - 01022010

    January 2, 2010 Palindrome - 01022010

    February 1, 2010 Palindrome - 01022010

    Palindrome Word Puzzle

    Palindrome Word Puzzle (PDF file)

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