GMT to AST
Convert Ireland Time — Dublin to Atlantic Time — Halifax — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Dublin, it's 5:00 AM in Halifax. Halifax is 4 hours behind Dublin. Use the converter above to turn any GMT time into AST, or scan the hour-by-hour table below for the full day.
GMT to AST at a glance
Planning a meeting between Dublin and Halifax
Planning a call between Dublin and Halifax? The best overlap during a standard 9-to-5 workday runs 1:00 PM–5:00 PM GMT (9:00 AM–1:00 PM AST). Aim for that window to reach both sides during business hours.
Hour-by-hour: Dublin to Halifax
A full day mapped from GMT to AST.
Frequently asked
Is Halifax ahead of or behind Dublin?
Halifax is 4 hours behind Dublin.
What is 12:00 PM GMT in AST?
12:00 PM in Dublin is 8:00 AM in Halifax.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so GMT and AST automatically reflect the correct daylight-saving offset for the current date.