Well, I did a little calculating.
07/16/1921 - 09/20/1899 = 7969 days
05/09/1943 - 07/16/1921 = 7967 days
03/01/1965 - 05/09/1943 = 7967 days
12/26/1986 - 03/01/1965 = 7970 days
10/15/2008 - 12/26/1986 = 7964 days
08/28/2030 - 10/15/2008 = 7987 days
05/31/2052 - 08/28/2030 = 7947 days
03/24/2074 - 05/31/2052 = 7967 days
01/16/2096 - 03/24/2074 = 7968 days
There seems to be somewhat of a pattern in the day’s differences between successive dates. 7967 days seems to be some kind of re-appearing difference.
Did you calculate in the leap year additions? does that make a difference?
Two of the three years that are off wear leap years.
8/15/2030 7964 leap year
6/28/2052 7987
3/31/2074 7947 leap year
The years were all 22 between each date and the
months were always -2 between each month
The pattern quit when it got to days unless
there is an if statement that we are not aware of.
The number 7967 is the chemical ID # for cyclohexanone, an industrial chemical.