Event-Time-Zone-Implementation-Planning.md

@@ -11,7 +11,7 @@
     * 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.
+* __DST__: Daylight Savings Time represents a change in the time by season, usually to make it so there is more light during the evening. For example, spring forward by one hour in the spring, and fall back by one hour in the autumn. DST can vary by location within a Time Zone.
 
 ## Event-TZ v1: Original changes