Cache not at the posted coordinates.
Solve the puzzle, survive my occasional errors and do the dance.
Use the last digit of the day.
N GH° PQ.ABC' W JK1° MN.DEF'
A = Kangra Earthquake of 1905
B = Franklin Roosevelt's second presidential inauguration
C = Thomas Edison Patents the First Phonograph
D = George Washington is born
E = Andrew Jackson Kills Charles Dickinson in a Duel
F = The Congress Of Texas Votes In Favor Of Annexation
G = George M. Cohan is Born
H = Birth of Virginia Dare, First Child Born in the Americas
J = Gleno's Dam Collapse
K = Daniel Boone Born
M = "Shock Corridor" Is Released
N = Amos Bronson Alcott Is Born
P = The Library Company Of Philadelphia Signs A Contract With Its First Librarian
Q = Christmas Island Discovered
You can validate your puzzle solution with certitude.