Update Daylight Savings Rules

The Update time zone daylight savings rules task is used to manually refresh and apply daylight savings rules stored in the database to all active time zones. This task is needed only if the government changes the rules for when daylight savings time begins and ends in a particular region. For example, if the date and time that daylight savings begins for the “(GMT-05:00) Eastern Time” region changes, then rules stored in the database will be updated to match the changes. To apply those new changes, you run through this brief process.