Gets the very first time when this rule takes effect.
|prevRawOffset ||The standard time offset from UTC before this rule takes effect in milliseconds. |
|prevDSTSavings ||The amount of daylight saving offset from the standard time. |
|result ||Receives the very first time when this rule takes effect. |
- true if the start time is available. When false is returned, output parameter "result" is unchanged. ICU 3.8
Implemented in InitialTimeZoneRule, AnnualTimeZoneRule, and TimeArrayTimeZoneRule.