Best Meeting Time: Dublin to London
🕐 Live Timezone Overlap: Dublin & London
Dublin and London share the same time zone year-round, which makes cross-Irish Sea scheduling straightforward. Both cities observe Irish Standard Time and British Summer Time on identical calendars, so a 10am meeting in Dublin is always 10am in London. The main friction point is not the clock but the diary: Dublin hosts European headquarters for many US technology firms, while London's financial district runs on New York market hours. That means competing pull from opposite sides of the Atlantic can leave the 9am–6pm window surprisingly congested.
Time Difference: Dublin and London
Dublin and London share the same UTC offset (+1). If either city observes daylight saving on a different schedule, the offset can shift by an hour during the transition.
Both cities sit at UTC+0 in winter and UTC+1 in summer. Dublin observes Irish Standard Time, aligned with the UK including the same DST schedule, so clock changes happen on the same March and October weekends. Because neither city leads or lags the other, the time difference remains zero throughout the year. Travellers moving between the two never adjust their watch.
Best Times to Meet
The full 9‑hour overlap from 9am to 6pm in both cities gives teams maximum flexibility. Inside that 9‑hour window, the cleanest slot is typically 10am–12pm: early enough to avoid the 12:30–1:30pm lunch hour common in London, late enough that Friday afternoons in financial services often wind down earlier than the rest of the week in both cities. Avoid scheduling close to 2:30pm GMT if your London attendees work in the City of London, which operates aligned to New York open at that hour. Late-afternoon slots between 4pm and 5:30pm work well for informal check-ins, a pattern common in London finance circles.
Working Hours Overlap Explained
Dublin operates on Europe/Dublin (currently UTC+1). London operates on Europe/London (currently UTC+1). The table below maps a standard 9:00 AM–6:00 PM day in Dublin to London's local time.
| Dublin time | London time | Status |
|---|---|---|
| 9:00 AM | 9:00 AM | London in business hours |
| 10:00 AM | 10:00 AM | London in business hours |
| 11:00 AM | 11:00 AM | London in business hours |
| 12:00 PM | 12:00 PM | London in business hours |
| 1:00 PM | 1:00 PM | London in business hours |
| 2:00 PM | 2:00 PM | London in business hours |
| 3:00 PM | 3:00 PM | London in business hours |
| 4:00 PM | 4:00 PM | London in business hours |
| 5:00 PM | 5:00 PM | London in business hours |
| 6:00 PM | 6:00 PM | London wrapping up |
Tips for Scheduling Across Dublin and London
- Schedule around 17 March: Dublin offices close for St Patrick's Day while London teams are at their desks.
- Use 10am–12pm slots to dodge the London lunch window and Dublin's US headquarters early calls.
- Friday afternoons wind down early in both cities; book important sessions before 3pm.
- London finance teams often align to New York open at 2:30pm GMT; avoid that slot for City workers.
- Both cities switch clocks on the same weekend, so recurring meetings never drift out of sync.
Public Holidays and Working Weeks
Both cities default to a 9am–6pm working day, though most UK office workers finish by 5:30pm and Fridays often wind down by 4pm. St Patrick's Day on 17 March is a national holiday in Dublin when many offices close, while London remains open. The May Bank Holiday falls on the first Monday in May in both countries, and Christmas Day closes offices on both sides. Check both calendars before booking cross-city all-hands meetings.