AST to PKT Converter & Meeting Planner
Quick answer: 9:00 AM AST = 6:00 PM PKT (fixed -04:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Atlantic Standard Time (AST) and Pakistan Standard Time (PKT)? You need to account for the standard time difference. Pakistan Standard Time is normally 9 hours ahead of Atlantic Standard Time. Whether you are coordinating between teams in Halifax and San Juan and Karachi and Lahore, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM AST = 9:00 AM PKT. The full 24-hour AST to PKT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM AST = 12:00 AM PKT (+1 day).
| AST Time | PKT Time |
|---|---|
| 12:00 AM (00:00) | 9:00 AM (09:00) |
| 1:00 AM (01:00) | 10:00 AM (10:00) |
| 2:00 AM (02:00) | 11:00 AM (11:00) |
| 3:00 AM (03:00) | 12:00 PM (12:00) |
| 4:00 AM (04:00) | 1:00 PM (13:00) |
| 5:00 AM (05:00) | 2:00 PM (14:00) |
| 6:00 AM (06:00) | 3:00 PM (15:00) |
| 7:00 AM (07:00) | 4:00 PM (16:00) |
| 8:00 AM (08:00) | 5:00 PM (17:00) |
| 9:00 AM (09:00) | 6:00 PM (18:00) |
| 10:00 AM (10:00) | 7:00 PM (19:00) |
| 11:00 AM (11:00) | 8:00 PM (20:00) |
| 12:00 PM (12:00) | 9:00 PM (21:00) |
| 1:00 PM (13:00) | 10:00 PM (22:00) |
| 2:00 PM (14:00) | 11:00 PM (23:00) |
| 3:00 PM (15:00) | 12:00 AM (00:00)+1 day |
| 4:00 PM (16:00) | 1:00 AM (01:00)+1 day |
| 5:00 PM (17:00) | 2:00 AM (02:00)+1 day |
| 6:00 PM (18:00) | 3:00 AM (03:00)+1 day |
| 7:00 PM (19:00) | 4:00 AM (04:00)+1 day |
| 8:00 PM (20:00) | 5:00 AM (05:00)+1 day |
| 9:00 PM (21:00) | 6:00 AM (06:00)+1 day |
| 10:00 PM (22:00) | 7:00 AM (07:00)+1 day |
| 11:00 PM (23:00) | 8:00 AM (08:00)+1 day |
Best time to call Karachi from Halifax
For most work calls, compare the normal business day in Halifax (AST) with the business day in Karachi (PKT). AST commonly covers North America, Caribbean, while PKT is mainly associated with South Asia.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
⚠️ There is no clean same-day business-hours overlap on 2026-07-05. A practical compromise is around 1:00 AM AST, which reaches 9:00 AM PKT near the start of their workday.
- DST Safety: AST or PKT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Pakistan Stock Exchange (PSX): 09:15-15:30 local time in Karachi.
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Frequently Asked Questions
What is the time difference between AST and PKT?
During standard time, Pakistan Standard Time is 9 hours ahead of Atlantic Standard Time.
Does the Caribbean observe Daylight Saving Time?
The vast majority of Caribbean nations and territories — including Puerto Rico, the Dominican Republic, the US Virgin Islands, Trinidad and Tobago, and Barbados — do not observe Daylight Saving Time and remain on AST (UTC-4) year-round. This means these territories share the same clock as Halifax only during the Atlantic Standard Time window in winter, diverging by one hour once Canada and Bermuda advance to ADT each spring.
What is the difference between AST and ADT?
AST (Atlantic Standard Time) is the standard winter offset at UTC-4:00, observed from the first Sunday in November through the second Sunday in March across all AST regions. ADT (Atlantic Daylight Time) is the summer offset at UTC-3:00, applied by Eastern Canadian provinces and Bermuda when they advance their clocks by one hour during Daylight Saving Time.
Does Pakistan observe Daylight Saving Time?
Pakistan does not observe Daylight Saving Time and has maintained a permanent UTC+5:00 offset since abandoning its last seasonal DST trial in 2009. The fixed offset means that the time difference between Pakistan and any DST-observing partner country shifts by one hour twice annually when those countries change their clocks — but PKT itself never moves.
What is the time difference between PKT and India's IST?
Indian Standard Time (IST) is exactly 30 minutes ahead of Pakistan Standard Time (PKT) at all times, since neither country observes Daylight Saving Time. A meeting scheduled at 10:00 PKT in Karachi or Lahore falls at 10:30 IST in Mumbai or New Delhi — a fixed, permanent relationship that never shifts seasonally.