The cache is not at the published coordinates.
You can find the cache at: N 51° 57.(B+G)BH E 001° 21.DGF
where AB/CD/EFGH is the date the nation was founded.
Hint: π ≠ pi
Chmmyr - fgnevat bhg gb frn vf bsgra n tbbq fbhepr bs vafcvengvba
Pnpur - oruvaq