AST to EST Converter (Live) + Current Time & 24-Hour Chart provides real-time conversion from Atlantic Standard Time (AST) to North American Eastern Time (EST/EDT). Compare the 1-hour or 0-hour difference, check live clocks, and coordinate schedules between Halifax, Puerto Rico, and New York. Understanding the Atlantic dynamic helps international shipping industries and tropical resort managers sync effectively with East Coast consumers and vendors.
AST to EST live calculator
Convert Atlantic Standard Time (AST) to Eastern Standard Time (EST) with live clocks, Caribbean and Halifax to New York offset differences, and business overlap planner.
Atlantic Standard Time (AST) is UTC-4. Parts of the Atlantic region (like Halifax) observe DST (ADT at UTC-3), while Caribbean territories (like Puerto Rico and Bermuda) stay on permanent UTC-4. Since Eastern Time changes between EST (UTC-5) and EDT (UTC-4), Puerto Rico is 1 hour ahead of Eastern in winter and shares the exact same time in summer. This zero-hour overlap in July or August surprises many visitors planning trips south from Miami.
Compare standard business hours and overlaps between AST and EST.
| AST Time | EST Time (Standard Offset) | EST Time (Daylight Offset) | Scheduling Status |
|---|---|---|---|
| 9:00 AM | 10:00 PM | 11:00 PM | Time shift gap |
| 1:00 PM | 2:00 AM | 3:00 AM | Out of hours |
| 5:00 PM | 6:00 AM | 7:00 AM | Early morning |
| GMT | Eastern | Offset |
|---|
Sync shipping timetables between Halifax ports and East Coast distribution centers.
Coordinate financial transactions and wire transfers between Puerto Rico banks and New York offices.
Manage hotel check-ins and cruise schedules for East Coast travelers visiting the Caribbean.
Why Puerto Rico shares the exact same clock time as New York during summer months.
Focus on Nova Scotia, New Brunswick, and Prince Edward Island converting to Eastern.
Scheduling business calls with Bermuda, Virgin Islands, and Puerto Rico.
No, Puerto Rico is in the Atlantic zone (AST). It is 1 hour ahead of Eastern in winter, but shares the same time in summer when Eastern is on EDT.
Halifax is always 1 hour ahead of New York.
3:00 PM AST is 2:00 PM Eastern in winter, and 3:00 PM Eastern in summer (for Caribbean AST).
Check the geographic location of your Atlantic zone contact to ensure correct 0-hour or 1-hour offset planning. While a maritime Canadian province observes summer adjustments normally, Caribbean nations prefer stable schedules year-round, merging perfectly with East Coast summers.
Next Step: Use our AST to EST tool above to plan your Atlantic and Eastern schedule.
