From
CST / CDT
Time Converter
CST to AST Time Converter
Convert Central Time to Atlantic Time with a live clock and clean permalinks.
To
AST / ADT
When it is 7:30 AM in Central Time, it is 9:30 AM in Atlantic Time.
CST to AST at a glance
Atlantic Time is 2 hours ahead of Central Time. If someone gives you a time in Central Time, move the clock by 2 hours to read it in Atlantic Time. A 9:00 AM start in Chicago becomes 11:00 AM in Halifax.
What Central Time covers
Central Time is the working clock for a large part of the US and Canada. Cities like Chicago, Dallas, and Houston use it. It is often the middle ground when teams need to coordinate between the east coast and the west coast.
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 CST and AST?
Atlantic Time is 2 hours ahead of Central Time.
What happens to a 3:00 PM meeting in CST?
It lands at 5:00 PM in AST.
Does daylight saving time matter for CST to AST?
Central Time 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.