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 = Jackie Robinson retires from baseball
B = Treaty Of Guadalupe Hidalgo Is Signed
C = First Groundhog Day Celebrated in Punxsutawney, Pennsylvania
D = Peter Wolf Is Born
E = Faversham Gunpowder Mill Explosion
F = Scofield Mine Disaster
You can validate your puzzle solution with certitude.