Calment was born close to the middle of the decade, whereas Morano was born only a month before the end... yet Calment still has the record

What about the last survivors for specific countries?

i.e. for the US to beat the 1890s (which I think has the record), Francis has to live until mid-2026, and for Japan to beat the 1890s, Tomiko, Okagi, or Masa has to live until spring of 2025

I don't know if this has been mentioned, but no 1900s decade cohort for a country has gone extinct since Lucile Randon died, and everyone that has died has resided in either the US or Japan

On average, one cohort per year should reach extinction.

In that regard 1904 only reached that stage less than 14 months ago and to be fair it had “punched above its weight” in outperforming 1905 and 1906.

So I’d suggest that particular statistic doesn’t really mean anything yet; though the limited nationalities represented in the deaths is interesting.

Today, 06 March 2024, Juan Vicente Pérez Mora officially breaks the record for the longest reigning male cohort! Congratulations Juan Vicente! We are praying for you!

Posted by: @aq

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The longest reign used to be held by James Wiggins, who passed away on 16 October 1991.

James Wiggins was likely born in 1880, not 1879, because he's not listed together with his parents in the 1880 US Census and I can't find him anywhere else in that census either. Also, his parents got married in January 1880.

If his age is adjusted downwards by one year, then this would mean that he would have never been the WOLM since Frederick Frazier would have been older than him. It would have also made his final age 111y,1d instead of 112y,1d.

Posted by: @aq

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Even more interestingly, only one man from our 1890s cohort managed to pass Mr. Wiggin's reign, but fell short of Mr. Moll's.

1. Jiroemon Kimura (d. 12 June 2013)
(267 days short of passing Mr. Moll)

Kimura also fell short of Chuganji's record by a couple of months.

Interestingly enough, we can also measure cohorts by years that start with 1 and that end with 0 (such as 1881-1890), since there was no year zero.

Then the calculations would be different.

1841-1850:

Women: Louise Godejohann (1849-1960), died on June 30, 1960

Men: Robert Early (1849-1960), died on October 9, 1960

1851-1860:

Women: Kitty Harvey (1860-1972), died on July 10, 1972 and Josefa Salas Mateo (1860-1973), died on February 27, 1973, both surpassed Godejohann's cohort record in succession to one another

Men: No one surpassed Early's cohort record

1861-1870:

Women: Emma Wilson (1870-1983), died on October 13, 1983 surpassed Mateo's cohort record

Men: No one surpassed Early's cohort record

1871-1880:

Women: Jeanne Calment (1875-1997), died on August 4, 1997 and Sarah Knauss (1880-1999), died on December 30, 1999, both surpassed Wilson's cohort record in succession to one another

Men*: Frederick Frazier (1880-1993), died on June 14, 1993, surpassed Early's cohort record

*Not counting James Wiggins since he was likely born in 1880. I suspect that it would only be a matter of time until LQ downgrades his validated age by one year.

1881-1890:

Women: No one surpassed Knauss's cohort record

Men: Yukichi Chuganji (1889-2003), died on September 28, 2003, Joan Riudavets Moll (1889-2004), died on March 5, 2004, and  Fred Hale (1890-2004), died on November 19, 2004, all surpassed Frazier's cohort record in succession to one another

1891-1900:

Women: No one surpassed Knauss's cohort record

Men: No one surpassed Hale's cohort record

1901-1910:

Women: No one surpassed Knauss's cohort record--yet, at least

Men: No one surpassed Hale's cohort record

Juan Vicente Perez Mora was able to surpass Chuganji and Riudavets but not Hale, unfortunately.

I suspect that we would first see a male cohort reach a year that ends with a 5 (as Fred Hale was slightly under 1.5 months from doing) than we would see a female cohort reach a year that ends with a 0 (as Sarah Knauss came within two days of doing, but she really was a huge exception).