9 = Vortex 11 = Gateway 10/13/1917 + 99 years + 11 months …
9 = Vortex
11 = Gateway
10/13/1917 + 99 years + 11 months + 11 days = 9/23/2017
10/13/1917 + 1199 months + 11 days = 9/23/2017
10/13/1917 + 9 x 11 years = 9/23/2017
https://twetch.app/t/0f92663bc29fa2b09013c99b2963ca1c8d05f1ebcf2ee49253e56a59c7d53c0a
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