PST to Vietnam
+15hPST
PSTSOURCEVietnam
ICTGreen rows indicate typical business hours (9 AM - 5 PM)
PST and ICT on the World Map
The map below highlights the PST (Pacific Standard Time) and ICT (Indochina Time) timezone regions across the globe.
PST – Pacific Standard Time
UTC-08:00Pacific Standard Time (PST) is the time zone for the US and Canadian Pacific coast, 8 hours behind UTC.
- •Silicon Valley and the world's biggest tech companies operate on Pacific Time.
- •The Hollywood film industry runs on PST/PDT.
- •PST is 3 hours behind EST, creating a significant business hours gap.
- •Vancouver, Canada's third-largest city, uses PST.
ICT – Indochina Time
UTC+07:00Indochina Time (ICT) is the time zone for Vietnam, Thailand, Laos, and Cambodia, 7 hours ahead of UTC.
- •Bangkok is one of the most visited cities in the world.
- •ICT is 12 hours ahead of EST.
- •Thailand, Vietnam, and Cambodia all share ICT.
Comparing Time Zones: PST and Vietnam
PST runs on Pacific Standard Time (PST) at UTC-08:00. Vietnam runs on Indochina Time (ICT) at UTC+07:00. That puts PST 15 hours ahead of Vietnam — a difference of +15h at the current offsets.
In practice, when it is 9:00 AM in PST it is 12:00 AM in Vietnam on the next day. Midnight in PST is 3:00 PM in Vietnam. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PST to Vietnam time conversion table
| PST (PST) | Vietnam (ICT) | Day |
|---|---|---|
| 12:00 AM | 3:00 PM | same day |
| 6:00 AM | 9:00 PM | same day |
| 7:00 AM | 10:00 PM | same day |
| 8:00 AM | 11:00 PM | same day |
| 9:00 AM | 12:00 AM | next day |
| 12:00 PM | 3:00 AM | next day |
| 3:00 PM | 6:00 AM | next day |
| 5:00 PM | 8:00 AM | next day |
| 6:00 PM | 9:00 AM | next day |
| 9:00 PM | 12:00 PM | next day |
Why people convert PST to Vietnam time
- Scheduling a call from PST to Vietnam: a 10:00 AM start in PST lands at 1:00 AM in Vietnam the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +15h gap: PST and Vietnam 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 Vietnam is 12:00 AM in PST.
- Keeping family and friends in sync: knowing that 8:00 PM in PST is 11:00 AM in Vietnam makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM PST" is unambiguous; "3 PM" across a +15h gap is not.
- With a +15h gap there is no shared 9-to-5 window, so alternate the early start: one week PST takes the early slot, the next week Vietnam does.
About PST (Pacific Standard Time)
Pacific Standard Time (PST) covers the west coast of North America, including tech hubs like San Francisco and Seattle, and entertainment capital Los Angeles. The Pacific Time Zone is home to Silicon Valley and the world's largest technology companies. During summer, clocks advance to Pacific Daylight Time (PDT, UTC-07:00). PST is also observed in Baja California, Mexico.
About ICT (Indochina Time)
Indochina Time (ICT) is used across Southeast Asia including Vietnam, Thailand, Laos, and Cambodia. Indonesia (Western time, WIB) also uses UTC+07:00. ICT does not observe daylight saving time.
Best time to call between PST and Vietnam
With a +15h offset there is no overlap inside a normal 9 AM – 5 PM day. Vietnam opens at 9:00 AM ICT, which is 12:00 AM in PST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
PST and Vietnam have no shared working hours because of the +15h gap. Teams need to alternate early starts or rely on asynchronous handovers.
PST is 15 hours ahead of Vietnam (PST UTC-08:00 → ICT UTC+07:00). 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
PST
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
Clocks fall back on Sun, Nov 1, 2026
Vietnam
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 PST and Vietnam?
PST (PST, UTC-08:00) is 15 hours ahead of Vietnam (ICT, UTC+07:00). The gap is currently +15h.
How do I convert PST time to Vietnam time?
Add +15h to PST local time. For example, 9:00 AM in PST is 12:00 AM in Vietnam (next day).
What time is it in Vietnam right now?
Vietnam uses ICT at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +15h offset from PST.
What is the best time to call Vietnam from PST?
There is no shared working-hours window because of the +15h gap. The closest option is 1:00 PM in PST, which is 4:00 AM in Vietnam.
Which is ahead, PST or Vietnam?
PST is 15 hours ahead of Vietnam. When it is 12:00 PM in PST it is 3:00 AM in Vietnam.
Do PST and Vietnam use different time zones?
PST uses PST at UTC-08:00, while Vietnam (Vietnam) uses ICT at UTC+07:00. The IANA identifiers are America/Los_Angeles and Asia/Ho_Chi_Minh.
Does daylight saving time affect the PST–Vietnam difference?
Neither zone observes daylight saving time, so the +15h offset between PST and Vietnam is fixed all year.
Which other cities share PST's time zone?
PST also covers Los Angeles, San Francisco, Seattle, Vancouver, San Diego, Portland, Las Vegas, Sacramento and 2 more.
Which countries use PST, PST's zone?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PST and Vietnam?
Sometimes. The +15h gap is large enough that 8:00 PM or later in PST already falls on the next day in Vietnam.
What is the time difference between PST and Vietnam?
Vietnam is +15h from PST.
What timezone is PST in?
PST operates on its local timezone.
What timezone is Vietnam in?
Vietnam operates on its local timezone.
Which countries use PST (Pacific Standard Time)?
PST is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PST observe daylight saving time?
Yes, PST switches to PDT during summer months.
What are some interesting facts about PST?
Silicon Valley and the world's biggest tech companies operate on Pacific Time. The Hollywood film industry runs on PST/PDT.
Which cities are in the ICT timezone?
Major cities in the ICT timezone include Bangkok, Ho Chi Minh City, Hanoi, Jakarta, Phnom Penh, Vientiane.
What is the UTC offset for ICT?
Indochina Time (ICT) is at UTC+07:00.
What should I know about the ICT timezone?
Bangkok is one of the most visited cities in the world. ICT is 12 hours ahead of EST.
When is it midnight in PST, what time is it in Vietnam?
When it is 12:00 AM (midnight) in PST (PST), it is +15h later in Vietnam (ICT).
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