January 3, 2010

Palindrome Dates in the 21st Century

Following the date pattern of mm-dd-yyyy, January 2, 2010 was a palindrome, meaning that it reads the same forward and backward (01022010). It was the second date of that pattern for this century. The first one was October 2, 2001 (10022001). The last one before that was 621 years ago on August 31, 1380 (08311380).

While palindrome words and phrases can be fun (kayak, name no one man, madam I’m Adam) and palindrome numbers are infinite, palindrome dates are rare. For the fun of it, electrical engineering professor Aziz Inan at the University of Portland, Oregon has compiled a complete list of palindrome dates. Here is the list:
Stuart Miles/freedigitalphotos.net

1. October 2, 2001 (10022001)
2. January 2, 2010 (01022010)
3. January 10, 2011 (1102011)
4. November 2, 2011 (11022011)
5. February 10, 2012 (2102012)
6. March 10, 2013 (3102013)
7. April 10, 2014 (4102014)
8. May 10, 2015 (5102015)
9. June 10, 2016 (6102016)
10. July 10, 2017 (7102017)
11. August 10, 2018 (8102018)
12. September 10, 2019 (9102019)
13. February 2, 2020 (02022020)
14. January 20, 2021 (1202021)
15. December 2, 2021 (12022021)
16. February 20, 2022 (2202022)
17. March 20, 2023 (3202023)
18. April 20, 2024 (4202024)
19. May 20, 2025 (5202025)
20. June 20, 2026 (6202026)
21. July 20, 2027 (7202027)
22. August 20, 2028 (8202028)
23. September 20, 2029 (9202029)
24. March 2, 2030 (03022030)
25. January 30, 2031 (1302031)
26. March 30, 2033 (3302033)
27. April 30, 2034 (4302034)
28. May 30, 2035 (5302035)
29. June 30, 2036 (6302036)
30. July 30, 2037 (7302037)
31. August 30, 2038 (8302038)
32. September 30, 2039 (9302039)
33. April 2, 2040 (04022040)
34. May 2, 2050 (05022050)
35. June 2, 2060 (06022060)
36. July 2, 2070 (07022070)
37. August 2, 2080 (08022080)
38. September 2, 2090 (09022090)

According to Inan, "The last palindrome date of this (third) millennium is to occur on Sept. 22, 2290 (09222290). After that, no more palindrome dates will happen for another 711 years until the next one in 3001, on Oct. 3rd (10033001)."

2 comments:

  1. That is very cool!

    ReplyDelete
  2. There will, of course, be hundreds of dates that are NOT palindromes. ;)

    ReplyDelete

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