For example, if a meeting organizer in the Pacific Time zone in the United States sends out a meeting request for a meeting that starts at P. Pacific Time to an attendee in the Mountain Time zone, the attendee will see the meeting as starting at P.
DNS is the workhorse underlying any network, and BIND is the most common Linux implementation of DNS.
The start and end times for items in the Outlook Calendar are saved in the Coordinated Universal Time (UTC) format, an international time standard similar to Greenwich Mean Time. In both cases, the meeting is saved as starting at the same UTC time of P. If two time zones are shown, the meeting organizer's time zone is used as the reference point.
When you send a meeting request to an attendee in a different time zone, the meeting item is displayed at the respective local times on each person's calendar, but saved in UTC. If you organize a meeting and display free/busy time for invitees from other time zones, their busy times are adjusted so that they appear correctly in your time zone.
The second time zone is visible only when you view the calendar in day or week view.