is all of ireland in the same time zone
Time in Ireland The IANA time zone database contains one zone for Ireland in the file zone.tab, named Europe/Dublin.
Time in the United Kingdom The United Kingdom uses Greenwich Mean Time or Western European Time (UTC) and British Summer Time or Western European Summer Time (UTC+01:00).
Paris Peace Accords
Central Time Zone Central Standard Time (CST) is six hours behind Coordinated Universal Time (UTC). During summer most of the zone uses daylight saving time (DST), and changes to Central Daylight Time (CDT) which is five hours behind UTC.