25 43 47 74 83 96 | Benjamin Banneker and his death October 9, 1806

This man died 31-days before his birthday, or a span of 32-days.  He died at age 74.

Pattern = 31; Patterns = 32
*He is remembered for tracking patterns 

October 9 is the day leaving 83-days left in the year.  Murder = 83

10/9/1806 = 10+9+18+06 = 43 (Masonic) (Killing) (RIP) (D.C. is 4.3.)
10/9/1806 = 1+0+9+1+8+0+6 = 25 (Death)
10/9/06 = 10+9+06 = 25

Notice the name Banneker has gematria of 47.

Federal = 138

He helped conduct the surveys that formed the boundaries for Washington D.C., the federal HQ.

66, the 11th triangular number; Black = 11

Freemason = 96

Washington = 49; America = 49

D.C. = 47