>> The Technical Plenary session is expected to be popular. It will be >> held on Wednesday, 6 Nov 2013 at 0900 PST, > > Why why why using a local timezone when announcing a live broadcast, > which will be seen by many people anywhere in the world? > > Do note also that there are three different timezones in the world > which are named PST. Not everyone lives in North America! > > IETF must use only UTC when announcing a worldwide event. I would prefer SHOULD rather than MUST (or must) :-) But anyway, FYI, 0900 PST (Canada/US Pacific Standard Time) == 1700 UTC. Ross.