How often are rankings updated?
Continuously. Every verified result, multiplier change, licence status change or publication recalculates the affected tables at once, and a nightly snapshot records the history used for movement and the 12-month chart.
Related questions
Answers follow the published KBN rules. The verify page is the authority for any licence or certificate, and where the rules do not cover a case, the Ranking Committee decides. Helpful counters on this demo site started from sample values.