CST to Halifax
+3hCST
CSTSOURCEHalifax
ADTGreen rows indicate typical business hours (9 AM - 5 PM)
CST and ADT on the World Map
The map below highlights the CST (Central Standard Time) and ADT (Atlantic Standard Time) timezone regions across the globe.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
AST – Atlantic Standard Time
UTC-04:00Atlantic Standard Time (AST) is the time zone for the Canadian Atlantic provinces and the Caribbean, 4 hours behind UTC.
- •Puerto Rico uses AST year-round and does not observe DST.
- •AST is 1 hour ahead of EST.
- •Halifax, the capital of Nova Scotia, is the largest city in AST Canada.
About Halifax
WikipediaHalifax operates on Atlantic Time (AST/ADT), UTC-4. As Canada's major Atlantic port and closest city to Europe, Halifax bridges North American and European business.
Halifax harbors the second largest natural ice-free harbor in the world.
Comparing Time Zones: CST and Halifax
CST runs on Central Standard Time (CST) at UTC-06:00. Halifax runs on Atlantic Daylight Time (ADT) at UTC-03:00, also currently on daylight saving time. That puts CST 3 hours ahead of Halifax — a difference of +3h at the current offsets.
In practice, when it is 9:00 AM in CST it is 12:00 PM in Halifax. Midnight in CST is 3:00 AM in Halifax.Halifax observes daylight saving time while CST does not, so the gap narrows or widens by an hour part of the year.
CST to Halifax time conversion table
| CST (CST) | Halifax (ADT) | Day |
|---|---|---|
| 12:00 AM | 3:00 AM | same day |
| 6:00 AM | 9:00 AM | same day |
| 7:00 AM | 10:00 AM | same day |
| 8:00 AM | 11:00 AM | same day |
| 9:00 AM | 12:00 PM | same day |
| 12:00 PM | 3:00 PM | same day |
| 3:00 PM | 6:00 PM | same day |
| 5:00 PM | 8:00 PM | same day |
| 6:00 PM | 9:00 PM | same day |
| 9:00 PM | 12:00 AM | next day |
Why people convert CST to Halifax time
- Scheduling a call from CST to Halifax: a 10:00 AM start in CST lands at 1:00 PM in Halifax, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both CST and Halifax are inside the 9-to-5 working day between 9:00 AM and 2:00 PM CST time (12:00 PM–5:00 PM ADT). That is roughly 5 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in CST is 11:00 PM in Halifax makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a +3h gap is not.
- Block 9:00 AM–2:00 PM CST as the recurring meeting window if you work primarily from CST and need Halifax colleagues present.
- Halifax: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
About AST (Atlantic Standard Time)
Atlantic Standard Time (AST) covers Canada's Atlantic provinces (Nova Scotia, New Brunswick, Prince Edward Island, and most of Labrador), as well as several Caribbean nations. Puerto Rico and the US Virgin Islands use AST year-round without daylight saving time. The Canadian provinces switch to Atlantic Daylight Time (ADT) in summer.
Best time to call between CST and Halifax
Both CST and Halifax sit inside the 9 AM – 5 PM working day between 9:00 AM–2:00 PM CST, which is 12:00 PM–5:00 PM ADT. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
CST and Halifax share 5 hours of working-hours overlap (9:00 AM–2:00 PM CST), so scheduling a live meeting is straightforward.
CST is 3 hours ahead of Halifax (CST UTC-06:00 → ADT UTC-03:00). The shared working window is 9:00 AM–2:00 PM CST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
CST
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
Halifax
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between CST and Halifax?
CST (CST, UTC-06:00) is 3 hours ahead of Halifax (ADT, UTC-03:00). The gap is currently +3h.
How do I convert CST time to Halifax time?
Add +3h to CST local time. For example, 9:00 AM in CST is 12:00 PM in Halifax.
What time is it in Halifax right now?
Halifax uses ADT at UTC-03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h offset from CST.
What is the best time to call Halifax from CST?
Call between 9:00 AM and 2:00 PM CST — that maps to 12:00 PM–5:00 PM ADT and keeps both parties inside the working day.
Which is ahead, CST or Halifax?
CST is 3 hours ahead of Halifax. When it is 12:00 PM in CST it is 3:00 PM in Halifax.
Do CST and Halifax use different time zones?
CST uses CST at UTC-06:00, while Halifax (Canada) uses ADT at UTC-03:00. The IANA identifiers are America/Chicago and America/Halifax.
Does daylight saving time affect the CST–Halifax difference?
Yes at the moment: Halifax is on daylight saving time and CST is not, so the +3h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share CST's time zone?
CST also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CST, CST's zone?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.
Is there a day difference between CST and Halifax?
Not normally. The +3h gap only pushes the date over for late-evening times.
What is the time difference between CST and Halifax?
Halifax is +3h from CST.
What timezone is CST in?
CST operates on its local timezone.
What timezone is Halifax in?
Halifax operates on Atlantic Time (AST/ADT), UTC-4. As Canada's major Atlantic port and closest city to Europe, Halifax bridges North American and European business.
What are the business hours in Halifax?
Standard business hours in Halifax are 9:00 AM - 5:00 PM AST.
Which countries use CST (Central Standard Time)?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.
Does CST observe daylight saving time?
Yes, CST switches to CDT during summer months.
What are some interesting facts about CST?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
Which cities are in the AST timezone?
Major cities in the AST timezone include Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
What is the UTC offset for AST?
Atlantic Standard Time (AST) is at UTC-04:00. During daylight saving time, it shifts to ADT.
What should I know about the AST timezone?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
When is it midnight in CST, what time is it in Halifax?
When it is 12:00 AM (midnight) in CST (CST), it is +3h later in Halifax (AST).
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