AKST to AST
+5hAKST
AKSTSOURCEAST
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
AKST and AST on the World Map
The map below highlights the AKST (Alaska Standard Time) and AST (Atlantic Standard Time) timezone regions across the globe.
AKST – Alaska Standard Time
UTC-09:00Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.
- •Alaska is the largest US state by area but has only about 730,000 residents.
- •Anchorage is the most populous city in AKST with about 290,000 people.
- •The Aleutian Islands use HAST instead of AKST.
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.
AKST to AST Time Difference – Complete Guide
AKST runs on Alaska Standard Time (AKST) at UTC-09:00. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts AKST 5 hours ahead of AST — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in AKST it is 2:00 PM in AST. Midnight in AKST is 5:00 AM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AKST to AST time conversion table
| AKST (AKST) | AST (AST) | 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 AKST to AST time
- Scheduling a call from AKST to AST: a 10:00 AM start in AKST lands at 3:00 PM in AST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both AKST and AST are inside the 9-to-5 working day between 9:00 AM and 12:00 PM AKST time (2:00 PM–5:00 PM AST). That is roughly 3 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in AKST is 1:00 AM in AST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AKST" is unambiguous; "3 PM" across a +5h gap is not.
- Block 9:00 AM–12:00 PM AKST as the recurring meeting window if you work primarily from AKST and need AST colleagues present.
About AKST (Alaska Standard Time)
Alaska Standard Time (AKST) is used in nearly all of Alaska. Due to Alaska's vast geographic size, the Aleutian Islands use Hawaii-Aleutian Standard Time instead. During summer months, Alaska switches to Alaska Daylight Time (AKDT, UTC-08:00).
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 AKST and AST
Both AKST and AST sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM AKST, which is 2:00 PM–5:00 PM AST. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
AKST and AST overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
AKST is 5 hours ahead of AST (AKST UTC-09:00 → AST UTC-04:00). The shared working window is 9:00 AM–12:00 PM AKST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AKST
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
AST
☀ 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 AKST and AST?
AKST (AKST, UTC-09:00) is 5 hours ahead of AST (AST, UTC-04:00). The gap is currently +5h.
How do I convert AKST time to AST time?
Add +5h to AKST local time. For example, 9:00 AM in AKST is 2:00 PM in AST.
What time is it in AST right now?
AST uses AST at UTC-04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +5h offset from AKST.
What is the best time to call AST from AKST?
Call between 9:00 AM and 12:00 PM AKST — that maps to 2:00 PM–5:00 PM AST and keeps both parties inside the working day.
Which is ahead, AKST or AST?
AKST is 5 hours ahead of AST. When it is 12:00 PM in AKST it is 5:00 PM in AST.
Does daylight saving time affect the AKST–AST difference?
Neither zone observes daylight saving time, so the +5h offset between AKST and AST is fixed all year.
Which other cities share AKST's time zone?
AKST also covers Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
Which countries use AKST, AKST's zone?
AKST is used in United States (Alaska).
Is there a day difference between AKST and AST?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between AKST and AST?
AST is +5h from AKST.
What timezone is AKST in?
AKST operates on its local timezone.
What timezone is AST in?
AST operates on its local timezone.
Which countries use AKST (Alaska Standard Time)?
AKST is used in United States (Alaska).
Does AKST observe daylight saving time?
Yes, AKST switches to AKDT during summer months.
What are some interesting facts about AKST?
Alaska is the largest US state by area but has only about 730,000 residents. Anchorage is the most populous city in AKST with about 290,000 people.
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 AKST, what time is it in AST?
When it is 12:00 AM (midnight) in AKST (AKST), it is +5h later in AST (AST).
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See every conversion from AKST →·See every conversion from AST →