* The __universal__ date/time perspective would drive automated processing (notifications, sorting, etc) on a shared/central server. This is expressed in a *universal timezone* (eg UTC/GMT).
* The __personal__ date/time perspective would appear when you lookup a webinar on the calendar of your personal smartphone. This is expressed based on the attendee's timezone.
* __Time Zone Database__: A common list of timezones which describes the rules/offsets/quirks used in different geographic regions.
* __DST__: Daylight Savings Time, which can vary by location within a Time Zone.
