Halifax to CAT
+5hHalifax
ADTSOURCECAT
CATGreen rows indicate typical business hours (9 AM - 5 PM)
ADT and CAT on the World Map
The map below highlights the ADT (Atlantic Standard Time) and CAT (Central Africa Time) timezone regions across the globe.
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.
CAT – Central Africa Time
UTC+02:00Central Africa Time (CAT, UTC+02:00) covers Zimbabwe, Zambia, Mozambique, Malawi and neighbouring countries.
- •Central Africa Time is fixed at UTC+02:00 with no daylight saving.
- •CAT matches South Africa Standard Time (SAST) all year.
- •It is the same offset as Central European Time in winter.
- •Harare is level with Johannesburg and one hour ahead of Lagos.
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.
Everything You Need to Know About Halifax and CAT Time
Halifax runs on Atlantic Daylight Time (ADT) at UTC-03:00, currently observing daylight saving time. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts Halifax 5 hours ahead of CAT — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in Halifax it is 2:00 PM in CAT. Midnight in Halifax is 5:00 AM in CAT.Halifax observes daylight saving time while CAT does not, so the gap narrows or widens by an hour part of the year.
Halifax to CAT time conversion table
| Halifax (ADT) | CAT (CAT) | Day |
|---|---|---|
| 12:00 AM | 5:00 AM | same day |
| 6:00 AM | 11:00 AM | same day |
| 7:00 AM | 12:00 PM | same day |
| 8:00 AM | 1:00 PM | same day |
| 9:00 AM | 2:00 PM | same day |
| 12:00 PM | 5:00 PM | same day |
| 3:00 PM | 8:00 PM | same day |
| 5:00 PM | 10:00 PM | same day |
| 6:00 PM | 11:00 PM | same day |
| 9:00 PM | 2:00 AM | next day |
Why people convert Halifax to CAT time
- Scheduling a call from Halifax to CAT: a 10:00 AM start in Halifax lands at 3:00 PM in CAT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Halifax and CAT are inside the 9-to-5 working day between 9:00 AM and 12:00 PM ADT time (2:00 PM–5:00 PM CAT). That is roughly 3 hours of usable overlap.
- Booking travel or deliveries: tracking CAT local time against Halifax keeps pickup windows and arrival estimates honest across the +5h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM ADT" is unambiguous; "3 PM" across a +5h gap is not.
- Block 9:00 AM–12:00 PM ADT as the recurring meeting window if you work primarily from Halifax and need CAT colleagues present.
- Halifax: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +5h gap.
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.
About CAT (Central Africa Time)
Central Africa Time (CAT) is fixed at UTC+02:00 all year across a broad belt of southern and central Africa, including Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi and the eastern Democratic Republic of the Congo. None of these countries observes daylight saving time, so CAT never shifts. It is the same offset as South Africa Standard Time (SAST) and the winter version of Central European Time, which makes CAT a convenient bridge between African, European and Middle Eastern schedules — Harare is level with Johannesburg all year and one hour ahead of Lagos.
Best time to call between Halifax and CAT
Both Halifax and CAT sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM ADT, which is 2:00 PM–5:00 PM CAT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Halifax and CAT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
Halifax is 5 hours ahead of CAT (ADT UTC-03:00 → CAT UTC+02:00). The shared working window is 9:00 AM–12:00 PM ADT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Halifax
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
CAT
Does not observe DST
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 Halifax and CAT?
Halifax (ADT, UTC-03:00) is 5 hours ahead of CAT (CAT, UTC+02:00). The gap is currently +5h.
How do I convert Halifax time to CAT time?
Add +5h to Halifax local time. For example, 9:00 AM in Halifax is 2:00 PM in CAT.
What time is it in CAT right now?
CAT uses CAT at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +5h offset from Halifax.
What is the best time to call CAT from Halifax?
Call between 9:00 AM and 12:00 PM ADT — that maps to 2:00 PM–5:00 PM CAT and keeps both parties inside the working day.
Which is ahead, Halifax or CAT?
Halifax is 5 hours ahead of CAT. When it is 12:00 PM in Halifax it is 5:00 PM in CAT.
Do Halifax and CAT use different time zones?
Halifax (Canada) uses ADT at UTC-03:00, while CAT uses CAT at UTC+02:00. The IANA identifiers are America/Halifax and Africa/Harare.
Does daylight saving time affect the Halifax–CAT difference?
Yes at the moment: Halifax is on daylight saving time and CAT is not, so the +5h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Halifax's time zone?
ADT also covers Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
Which countries use ADT, Halifax's zone?
ADT is used in Canada (Atlantic provinces), Puerto Rico, US Virgin Islands, Dominican Republic, Venezuela, Bolivia, Barbados, Trinidad and Tobago.
Is there a day difference between Halifax and CAT?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between Halifax and CAT?
CAT is +5h from Halifax.
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 timezone is CAT in?
CAT operates on its local timezone.
What are the business hours in Halifax?
Standard business hours in Halifax are 9:00 AM - 5:00 PM AST.
Which countries use AST (Atlantic Standard Time)?
AST is used in Canada (Atlantic provinces), Puerto Rico, US Virgin Islands, Dominican Republic, Venezuela, Bolivia, and 2 more countries.
Does AST observe daylight saving time?
Yes, AST switches to ADT during summer months.
What are some interesting facts about AST?
Puerto Rico uses AST year-round and does not observe DST. AST is 1 hour ahead of EST.
Which cities are in the CAT timezone?
Major cities in the CAT timezone include Harare, Lusaka, Maputo, Lilongwe, Kigali.
What is the UTC offset for CAT?
Central Africa Time (CAT) is at UTC+02:00.
What should I know about the CAT timezone?
Central Africa Time is fixed at UTC+02:00 with no daylight saving. CAT matches South Africa Standard Time (SAST) all year.
When is it midnight in Halifax, what time is it in CAT?
When it is 12:00 AM (midnight) in Halifax (AST), it is +5h later in CAT (CAT).
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