"Climax" year of each turning

[Ghost]

I'm just going to take guesses, but please let me know what you think about this chart since 3T of the previous saeculum:

Great Power Saeculum (1865-1945)
3T (1908-1929): 1918 (Armistice day/End of WWI)
4T (1929-1945): 1933 (Hitler rising to power, worst year of the Great Depression)

Millennial Saeculum (1945-present)
1T (1945-1963): 1956? (peak of 50's pop culture)
2T (1963-1980): 1968 (MLK and RFK assassinations, "peak" year of Baby Boomer culture)
3T (1980-2008): 1989 (Berlin Wall falls, Tim Berners-Lee invents World Wide Web)
4T (2008-present): 2020 (WWIII scare, reactions to Brexit, coronavirus scare, hantavirus, possibly dramatic 2020 election)

I am most unsure about 1T and 2T for Millennial Saeculum.