Cache is not at the posted coordinates.
Solve the puzzle and do the dance.
Use the last digit of the day.
N 38 47.ABC W 121 17.DEF
A = First Formal Contact Between English Colonists and Native Americans
B = Kentucky is the 15th State Admitted to the Union
C = The Survivors Of The Amistad Mutiny Are Freed
D = Versailles Rail Accident
E = The United States Senate Ratifies The Louisiana Purchase Treaty
F = Loss of HMS Minotaur
You can validate your puzzle solution with certitude.