The date 9-11-2001 was known and foreshadowed as early as the 1968 release of 2001: A Space Odyssey [w/ Black Obelisk/Stone/Rock] and the initial plans for the building of the twin towers. They were “twins” for a reason, and they were built to be destroyed.

The “year” of the event was set in 1791 with the first of three 70 year periods to repay international debt. Debt due in 1861, US went bankrupt and reorganized. Debt due in 1931, US went bankrupt and reorganized. Exact day of September 11 likely set per 1931 reorg that concluded in 1933.

Exact date known for at least 68 years prior. It was selected in 1933 (or rolled fwd from 1791, 1861) for its satanic significance. It likely was selected at least in part as “payback” or “emphasis” for this 1777 event: https://en.m.wikipedia.org/wiki/Battle_of_Brandywine

Debt due in 2001, US went bankrupt and then went into final 20 year “debt resolution” period that ended on September 11, 2021. Prior to that date, the US Corp (1871, 1971) either got liquidated for “repayment” or there was a Debt Jubilee. Unknown which actually happened. March 27, 2020 “nationalization” of Federal Reserve Bank is likely related just ahead of final 2021 resolution date:

Trump 3-27-2020 EO: https://www.presidency.ucsb.edu/documents/executive-order-13912-national-emergency-authority-order-the-selected-reserve-and-certain

3-27-2020 “Nationalization” of FedRes with help of US Treasury (Republic?) & BlackRock (Rupus Nigra): https://www.nytimes.com/2020/03/27/business/coronavirus-blackrock-federal-reserve.html