Bang On Meaning

Example: Precisely accurate; exactly appropriate or fitting.
2005, June A. Valladares, Ideate with June A. Valladares, page 77,
  So I can truly say that God's Perfect Timing is more bang-on than GMT or IST or EST or any other manmade time —He is never too early and He is never too late!
2009, Steven Manners, Valley of Fire, page 22,
  â€œ […] A case of gambling addiction — what could be more bang on in a place like Las Vegas?”