Time Zone
The DR is located in the Eastern Time Zone, however it does not use Daylight savings as in Canada and the USA.
In October when the clocks go back one hour, the time is NOT adjusted here, so the DR is one hour ahead. In April when the clock go forward one hour, again the time here does not change so the times are the same.
It is like being in Daylight Savings time all year round, but to say it is atlantic time is incorrect as is would be correct for only half the year.
James