From
AST / ADT
Time Converter
AST to CST Time Converter
Convert Atlantic Time to Central Time with a live clock and clean permalinks.
To
CST / CDT
When it is 7:30 AM in Atlantic Time, it is 5:30 AM in Central Time.
AST to CST at a glance
Central Time is 2 hours behind Atlantic Time. If someone gives you a time in Atlantic Time, move the clock by 2 hours to read it in Central Time. A 9:00 AM start in Halifax becomes 7:00 AM in Chicago.
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.
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.
Quick answers
What is the time difference between AST and CST?
Central Time is 2 hours behind Atlantic Time.
What happens to a 3:00 PM meeting in AST?
It lands at 1:00 PM in CST.
Does daylight saving time matter for AST to CST?
Atlantic Time and Central Time are shown using the offsets that are active right now, so the result already reflects any daylight saving change in effect today.