IcuZoneRulesProvider A ZoneRulesProvider that generates rules from ICU4J TimeZones. 
ZoneOffsetTransition A transition between two offsets caused by a discontinuity in the local time-line. 
ZoneOffsetTransitionRule A rule expressing how to create a transition. 
ZoneRules The rules defining how the zone offset varies for a single time-zone. 
ZoneRulesProvider Provider of time-zone rules to the system. 


ZoneOffsetTransitionRule.TimeDefinition A definition of the way a local time can be converted to the actual transition date-time. 


ZoneRulesException Thrown to indicate a problem with time-zone configuration.