AST to PHT Converter & Meeting Planner
Quick answer: 9:00 AM AST = 9:00 PM PHT (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 Philippine Time (PHT)? You need to account for the standard time difference. Philippine Time is normally 12 hours ahead of Atlantic Standard Time. Whether you are coordinating between teams in Halifax and San Juan and Manila and Quezon City, 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 = 12:00 PM PHT. The full 24-hour AST to PHT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM AST = 3:00 AM PHT (+1 day).
| AST Time | PHT Time |
|---|---|
| 12:00 AM (00:00) | 12:00 PM (12:00) |
| 1:00 AM (01:00) | 1:00 PM (13:00) |
| 2:00 AM (02:00) | 2:00 PM (14:00) |
| 3:00 AM (03:00) | 3:00 PM (15:00) |
| 4:00 AM (04:00) | 4:00 PM (16:00) |
| 5:00 AM (05:00) | 5:00 PM (17:00) |
| 6:00 AM (06:00) | 6:00 PM (18:00) |
| 7:00 AM (07:00) | 7:00 PM (19:00) |
| 8:00 AM (08:00) | 8:00 PM (20:00) |
| 9:00 AM (09:00) | 9:00 PM (21:00) |
| 10:00 AM (10:00) | 10:00 PM (22:00) |
| 11:00 AM (11:00) | 11:00 PM (23:00) |
| 12:00 PM (12:00) | 12:00 AM (00:00)+1 day |
| 1:00 PM (13:00) | 1:00 AM (01:00)+1 day |
| 2:00 PM (14:00) | 2:00 AM (02:00)+1 day |
| 3:00 PM (15:00) | 3:00 AM (03:00)+1 day |
| 4:00 PM (16:00) | 4:00 AM (04:00)+1 day |
| 5:00 PM (17:00) | 5:00 AM (05:00)+1 day |
| 6:00 PM (18:00) | 6:00 AM (06:00)+1 day |
| 7:00 PM (19:00) | 7:00 AM (07:00)+1 day |
| 8:00 PM (20:00) | 8:00 AM (08:00)+1 day |
| 9:00 PM (21:00) | 9:00 AM (09:00)+1 day |
| 10:00 PM (22:00) | 10:00 AM (10:00)+1 day |
| 11:00 PM (23:00) | 11:00 AM (11:00)+1 day |
Best time to call Manila from Halifax
For most work calls, compare the normal business day in Halifax (AST) with the business day in Manila (PHT). AST commonly covers North America, Caribbean, while PHT is mainly associated with Southeast 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 10:00 PM AST, which reaches 9:00 AM PHT near the start of their workday.
- DST Safety: AST or PHT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Philippine Stock Exchange (PSE): 09:30-15:00 local time in Makati.
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Frequently Asked Questions
What is the time difference between AST and PHT?
During standard time, Philippine Time is 12 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 the Philippines observe Daylight Saving Time?
The Philippines does not observe Daylight Saving Time and has not done so since 1990, when the practice was last used as an energy conservation measure. PHT remains permanently fixed at UTC+8:00 every day of the year, meaning the offset between Manila and any DST-observing partner country shifts by one hour twice annually when those countries change their clocks — but PHT itself never moves.
Are PHT and SGT the same time?
Yes, Philippine Time (PHT) and Singapore Time (SGT) share the identical UTC+8:00 offset, and neither country observes Daylight Saving Time, making Manila and Singapore permanently synchronized on the same clock year-round. The same alignment holds with Malaysia (MYT), Greater China (CST), Hong Kong (HKT), and Western Australia (AWST) — all permanent UTC+8 zones.