If generations/saeculums could be approximated to even lengths, then maybe 80 years for a saeculum would make more sense:
Civil War Saeculum
(I haven't done much research on this era, but it seems the High went on a lot longer than normal and the Unraveling and Crisis were truncated, at least according to Strauss and Howe)
1785-1804 - High, birth of Transcendental Generation
1805-1824 - Extended High, continued birth of Transcendental Generation
1825-1844 - Awakening, birth of Gilded Generation
1845-1864 - Unraveling and Crisis, birth of Progressive Generation
Great Power Saeculum
1865-1884 - High, birth of Missionary Generation
1885-1904 - Awakening, birth of Lost Generation
1905-1924 - Unraveling, birth of G.I. Generation
1925-1944 - Crisis, birth of Silent Generation
Millennial Saeculum
1945-1964 - High, birth of Baby Boomers (with late-wave Generation Jones 1955-1964)
1965-1984 - Awakening, birth of Generation X (with late-wave Xennials 1975-1984)
1985-2004 - Unraveling, birth of Millennials (with late-wave Generation Z 1995-2004)
2005-2024 - Crisis, birth of Homeland (or Alpha) Generation
On top of this, I think some of the confusion in modern times is the difference in cultural generations to historical generations, cultural generations seem a bit shorter, 17 years instead of 20 years.
1912-1928 - Lost cultural era
1929-1945 - G.I. cultural era
1946-1962 - Silent cultural era
1963-1979 - Boomer cultural era
1980-1996 - Generation X cultural era
1997-2013 - Millennial cultural era
2014-2030 - Generation Z cultural era
Civil War Saeculum
(I haven't done much research on this era, but it seems the High went on a lot longer than normal and the Unraveling and Crisis were truncated, at least according to Strauss and Howe)
1785-1804 - High, birth of Transcendental Generation
1805-1824 - Extended High, continued birth of Transcendental Generation
1825-1844 - Awakening, birth of Gilded Generation
1845-1864 - Unraveling and Crisis, birth of Progressive Generation
Great Power Saeculum
1865-1884 - High, birth of Missionary Generation
1885-1904 - Awakening, birth of Lost Generation
1905-1924 - Unraveling, birth of G.I. Generation
1925-1944 - Crisis, birth of Silent Generation
Millennial Saeculum
1945-1964 - High, birth of Baby Boomers (with late-wave Generation Jones 1955-1964)
1965-1984 - Awakening, birth of Generation X (with late-wave Xennials 1975-1984)
1985-2004 - Unraveling, birth of Millennials (with late-wave Generation Z 1995-2004)
2005-2024 - Crisis, birth of Homeland (or Alpha) Generation
On top of this, I think some of the confusion in modern times is the difference in cultural generations to historical generations, cultural generations seem a bit shorter, 17 years instead of 20 years.
1912-1928 - Lost cultural era
1929-1945 - G.I. cultural era
1946-1962 - Silent cultural era
1963-1979 - Boomer cultural era
1980-1996 - Generation X cultural era
1997-2013 - Millennial cultural era
2014-2030 - Generation Z cultural era