From
UTC
Time Converter
UTC to AST Time Converter
Convert UTC to Atlantic Time with a live clock and clean permalinks.
To
AST / ADT
When it is 7:30 AM in UTC, it is 4:30 AM in Atlantic Time.
UTC to AST at a glance
Atlantic Time is 3 hours behind UTC. If someone gives you a time in UTC, move the clock by 3 hours to read it in Atlantic Time. A 9:00 AM start in London becomes 6:00 AM in Halifax.
What UTC covers
UTC is the global reference clock used to compare time zones around the world. It does not change for daylight saving time. It is the safest format for international schedules, APIs, databases, and server logs.
What Atlantic Time covers
Atlantic Time is used in eastern Canada and parts of the Caribbean. Halifax is a common city reference for it. It matters when scheduling across North America and island markets farther east.
Quick answers
What is the time difference between UTC and AST?
Atlantic Time is 3 hours behind UTC.
What happens to a 3:00 PM meeting in UTC?
It lands at 12:00 PM in AST.
Does daylight saving time matter for UTC to AST?
UTC and Atlantic Time are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.