PKT to AST
-9hPKT
PKTSOURCEAST
ASTGreen rows indicate typical business hours (9 AM - 5 PM)
PKT and AST on the World Map
The map below highlights the PKT (Pakistan Standard Time) and AST (Atlantic Standard Time) timezone regions across the globe.
PKT – Pakistan Standard Time
UTC+05:00Pakistan Standard Time (PKT) is the time zone for Pakistan, 5 hours ahead of UTC.
- •Pakistan does not observe daylight saving time.
- •Karachi is one of the world's most populous cities.
- •PKT is the same offset as Uzbekistan (UZT) and Yekaterinburg (YEKT).
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.
Everything You Need to Know About PKT and AST Time
PKT runs on Pakistan Standard Time (PKT) at UTC+05:00. AST runs on Atlantic Standard Time (AST) at UTC-04:00. That puts PKT 9 hours behind AST — a difference of -9h at the current offsets.
In practice, when it is 9:00 AM in PKT it is 12:00 AM in AST. Midnight in PKT is 3:00 PM in AST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PKT to AST time conversion table
| PKT (PKT) | AST (AST) | Day |
|---|---|---|
| 12:00 AM | 3:00 PM | previous day |
| 6:00 AM | 9:00 PM | previous day |
| 7:00 AM | 10:00 PM | previous day |
| 8:00 AM | 11:00 PM | previous day |
| 9:00 AM | 12:00 AM | same day |
| 12:00 PM | 3:00 AM | same day |
| 3:00 PM | 6:00 AM | same day |
| 5:00 PM | 8:00 AM | same day |
| 6:00 PM | 9:00 AM | same day |
| 9:00 PM | 12:00 PM | same day |
Why people convert PKT to AST time
- Scheduling a call from PKT to AST: a 10:00 AM start in PKT lands at 1:00 AM in AST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -9h gap: PKT and AST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in AST is 12:00 AM in PKT.
- Watching a live event or market open: PKT viewers need 12:00 AM in AST to catch a 9:00 AM start there, and 9:00 AM if the event is anchored to PKT.
- Always state the zone abbreviation, not just the hour. "3:00 PM PKT" is unambiguous; "3 PM" across a -9h gap is not.
- With a -9h gap there is no shared 9-to-5 window, so alternate the early start: one week PKT takes the early slot, the next week AST does.
About PKT (Pakistan Standard Time)
Pakistan Standard Time (PKT) is the time zone used throughout Pakistan. PKT does not observe daylight saving time. Pakistan is the 5th most populous country in the world.
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 PKT and AST
With a -9h offset there is no overlap inside a normal 9 AM – 5 PM day. AST opens at 9:00 AM AST, which is 12:00 AM in PKT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PKT and AST have no shared working hours because of the -9h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PKT is 9 hours behind AST (PKT UTC+05:00 → AST UTC-04:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PKT
Does not observe DST
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 PKT and AST?
PKT (PKT, UTC+05:00) is 9 hours behind AST (AST, UTC-04:00). The gap is currently -9h.
How do I convert PKT time to AST time?
Add -9h to PKT local time. For example, 9:00 AM in PKT is 12:00 AM 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 -9h offset from PKT.
What is the best time to call AST from PKT?
There is no shared working-hours window because of the -9h gap. The closest option is 1:00 PM in PKT, which is 4:00 AM in AST.
Which is behind, PKT or AST?
PKT is 9 hours behind AST. When it is 12:00 PM in PKT it is 3:00 AM in AST.
Does daylight saving time affect the PKT–AST difference?
Neither zone observes daylight saving time, so the -9h offset between PKT and AST is fixed all year.
Which other cities share PKT's time zone?
PKT also covers Karachi, Lahore, Islamabad, Rawalpindi, Faisalabad, Peshawar.
Which countries use PKT, PKT's zone?
PKT is used in Pakistan.
Is there a day difference between PKT and AST?
Not normally. The -9h gap only pushes the date over the previous day.
What is the time difference between PKT and AST?
AST is -9h from PKT.
What timezone is PKT in?
PKT operates on its local timezone.
What timezone is AST in?
AST operates on its local timezone.
Which countries use PKT (Pakistan Standard Time)?
PKT is used in Pakistan.
Does PKT observe daylight saving time?
No, PKT does not observe daylight saving time and remains at UTC+05:00 year-round.
What are some interesting facts about PKT?
Pakistan does not observe daylight saving time. Karachi is one of the world's most populous cities.
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 PKT, what time is it in AST?
When it is 12:00 AM (midnight) in PKT (PKT), it is -9h later in AST (AST).
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See every conversion from PKT →·See every conversion from AST →