AST to Nairobi
+7hAST
ASTSOURCENairobi
EATGreen rows indicate typical business hours (9 AM - 5 PM)
AST and EAT on the World Map
The map below highlights the AST (Atlantic Standard Time) and EAT (East 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.
EAT – East Africa Time
UTC+03:00East Africa Time (EAT) is the time zone for East Africa, 3 hours ahead of UTC.
- •Nairobi is a major tech hub in Africa, often called 'Silicon Savannah'.
- •Ethiopia uses its own calendar, which is 7-8 years behind the Gregorian calendar.
- •EAT is the same offset as MSK (Moscow Time).
About Nairobi
WikipediaNairobi operates on East Africa Time (EAT), UTC+3. As the tech hub of Africa (Silicon Savannah), Nairobi leads African fintech and mobile innovation.
Nairobi National Park is the only national park within a capital city, with lions visible against the skyline.
Time Conversion Guide: AST to Nairobi
AST runs on Atlantic Standard Time (AST) at UTC-04:00. Nairobi runs on East Africa Time (EAT) at UTC+03:00. That puts AST 7 hours ahead of Nairobi — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in AST it is 4:00 PM in Nairobi. Midnight in AST is 7:00 AM in Nairobi. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AST to Nairobi time conversion table
| AST (AST) | Nairobi (EAT) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert AST to Nairobi time
- Scheduling a call from AST to Nairobi: a 10:00 AM start in AST lands at 5:00 PM in Nairobi, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both AST and Nairobi are inside the 9-to-5 working day between 9:00 AM and 10:00 AM AST time (4:00 PM–5:00 PM EAT). That is roughly 1 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in AST is 3:00 AM in Nairobi makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AST" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM AST as the recurring meeting window if you work primarily from AST and need Nairobi colleagues present.
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 EAT (East Africa Time)
East Africa Time (EAT) is used in the countries of East Africa including Kenya, Ethiopia, Tanzania, Uganda, and others. EAT does not observe daylight saving time and shares the same offset as Moscow Standard Time (MSK).
Best time to call between AST and Nairobi
Both AST and Nairobi sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM AST, which is 4:00 PM–5:00 PM EAT. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
AST and Nairobi overlap for only 60 minutes (9:00 AM–10:00 AM AST), so meetings have to be booked precisely.
AST is 7 hours ahead of Nairobi (AST UTC-04:00 → EAT UTC+03:00). The shared working window is 9:00 AM–10:00 AM AST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AST
☀ Currently in DST
Standard: UTC-04:00 · DST: UTC-03:00
Clocks fall back on Sun, Nov 1, 2026
Nairobi
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 AST and Nairobi?
AST (AST, UTC-04:00) is 7 hours ahead of Nairobi (EAT, UTC+03:00). The gap is currently +7h.
How do I convert AST time to Nairobi time?
Add +7h to AST local time. For example, 9:00 AM in AST is 4:00 PM in Nairobi.
What time is it in Nairobi right now?
Nairobi uses EAT at UTC+03:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from AST.
What is the best time to call Nairobi from AST?
Call between 9:00 AM and 10:00 AM AST — that maps to 4:00 PM–5:00 PM EAT and keeps both parties inside the working day.
Which is ahead, AST or Nairobi?
AST is 7 hours ahead of Nairobi. When it is 12:00 PM in AST it is 7:00 PM in Nairobi.
Do AST and Nairobi use different time zones?
AST uses AST at UTC-04:00, while Nairobi (Kenya) uses EAT at UTC+03:00. The IANA identifiers are America/Halifax and Africa/Nairobi.
Does daylight saving time affect the AST–Nairobi difference?
Neither zone observes daylight saving time, so the +7h offset between AST and Nairobi is fixed all year.
Which other cities share AST's time zone?
AST also covers Halifax, San Juan, Santo Domingo, Caracas, La Paz, Fredericton, Charlottetown.
Which countries use AST, AST's zone?
AST 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 AST and Nairobi?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between AST and Nairobi?
Nairobi is +7h from AST.
What timezone is AST in?
AST operates on its local timezone.
What timezone is Nairobi in?
Nairobi operates on East Africa Time (EAT), UTC+3. As the tech hub of Africa (Silicon Savannah), Nairobi leads African fintech and mobile innovation.
What are the business hours in Nairobi?
Standard business hours in Nairobi are 8:00 AM - 5:00 PM EAT.
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 EAT timezone?
Major cities in the EAT timezone include Nairobi, Addis Ababa, Dar es Salaam, Kampala, Mogadishu, Antananarivo.
What is the UTC offset for EAT?
East Africa Time (EAT) is at UTC+03:00.
What should I know about the EAT timezone?
Nairobi is a major tech hub in Africa, often called 'Silicon Savannah'. Ethiopia uses its own calendar, which is 7-8 years behind the Gregorian calendar.
When is it midnight in AST, what time is it in Nairobi?
When it is 12:00 AM (midnight) in AST (AST), it is +7h later in Nairobi (EAT).
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