Proper accurate excellent appropriate specific precise correct so reasonable valid useless-on legit best veracious on the money place-on sound bang on on-focus on on target flawless arduous infallible faultless impeccable stringent stringent inerrant letter-excellent errorless true - established with reference to the earth's axis in lieu of the magnetic poles; https://andydjpvc.ssnblog.com/26405227/facts-about-and-revealed