Wanderlust World Wanderlust World Dublin, Ireland is 5 hours ahead of Boston, Massachusetts. Dublin operates on Greenwich Mean Time (GMT/UTC+0) in winter and Irish Standard Time (IST/UTC+1) in summer. Boston follows Eastern Time (ET): UTC-5 in winter (EST) and UTC-4 in summer (EDT). The 5-hour gap holds during standard time; when both observe daylight saving, the difference remains 5 hours because both shift forward.