PST — Pacific Standard Time
See where PST is used, its UTC-8 offset, how it relates to PDT, and compare it with other time zones.
Meaning and Regions Used
PST stands for Pacific Standard Time and has a UTC-8 offset. It is used in parts of Canada, Mexico, the Philippines, and the United States.
PST and PDT Relationship
PST is the standard-time counterpart to PDT, which is used during daylight saving periods. This page helps you understand when regions switch and when PST applies.
Convert PST Across Zones
Compare PST with other time zones using the visual time grid, hour-by-hour tables, and scheduling tools. Export meetings with ICS download or add them to Google Calendar and Gmail.
How to Convert PST to Other Time Zones
Open the PST converter page: Visit https://www.xconvert.com/time-converter/pst-time-zone to load the comparison grid with PST as the starting reference. This view is useful when you are planning a call with teams in Los Angeles, Seattle, or Tijuana and need to compare Pacific Standard Time against other business locations on a single timeline.
Add comparison cities: Click + Add City and search for cities you want to compare with PST, such as Los Angeles, San Francisco, or Seattle for West Coast operations, or Tijuana and Mexicali for cross-border manufacturing and logistics coordination. This is especially practical for companies managing software, media, e-commerce, or supply-chain work across the United States, Canada, and Mexico.
Select a time range on the grid: Click Select to enter selection mode, then drag across the colored PST timeline to highlight the hours you want to compare; the selected block appears in purple, and you can fine-tune it by dragging the left or right handles or moving the entire range from the center. If you are trying to schedule a support handoff or client call during standard business hours, use the green work-hour blocks to quickly spot overlap between PST and the other cities you added.
Export and share the result: After selecting a time range, use the export options that appear to download an ICS file, open Google Calendar, draft through Gmail, Copy to clipboard, or create a Share link. This is useful when a distributed team needs the same meeting window saved in local calendars automatically, or when you want to send a confirmed PST meeting slot to partners in another country without rewriting the time manually.
About Pacific Standard Time (PST)
Pacific Standard Time, abbreviated PST, is the standard-time designation for regions that observe a UTC-8 offset. In practical terms, PST is 8 hours behind Coordinated Universal Time, which makes it one of the key reference zones for scheduling business across North America and the Pacific.
PST is used in Canada, Mexico, the Philippines, and the United States. On this page, the principal cities associated with PST include Los Angeles, San Diego, San Jose, San Francisco, Seattle, Tijuana, Mexicali, Ensenada, Rosarito, and Tecate, making it especially relevant for West Coast commerce, border-region manufacturing, and regional customer support planning.
PST is a standard-time abbreviation, and its daylight saving counterpart is PDT. That distinction matters because a meeting labeled PST is not the same as one labeled PDT, and using the wrong abbreviation can shift a scheduled call by an hour when daylight saving rules are in effect.
Other abbreviations that share the same UTC offset include AKDT, PT, and U. Even when offsets match, teams should still confirm the exact abbreviation being used in invites and documentation so that participants understand whether the reference is a general offset match or specifically Pacific Standard Time.
PST and Daylight Saving Time
PST refers specifically to the standard-time period at UTC-8. When daylight saving time is observed, the abbreviation changes from PST to PDT, so the label itself tells you whether the schedule is using standard time or daylight time.
This distinction is important for recurring meetings, travel itineraries, and customer-facing appointment windows. If a calendar invite says PST, it should be interpreted as Pacific Standard Time rather than Pacific Daylight Time, and that can affect coordination with teams in other regions that also change clocks seasonally.
When the region is on daylight saving time, the correct counterpart abbreviation is PDT rather than PST. For any meeting that spans the seasonal change, users should confirm whether the event remains fixed to Pacific local time or fixed to the PST label, because those are not always handled the same way in calendars and scheduling systems.
Frequently Asked Questions
What does PST stand for?
PST stands for Pacific Standard Time. It is the standard-time designation used for locations that observe a UTC-8 offset, and it commonly appears in scheduling, travel, and business communication related to the Pacific region.
Is PST the same as PDT?
No, PST and PDT are not the same. PST is the standard-time abbreviation, while PDT is its daylight saving counterpart, so using the wrong one can create a one-hour scheduling error in meetings, shift planning, or calendar invites.
Which cities use PST?
Principal cities associated with PST include Los Angeles, San Diego, San Jose, San Francisco, Seattle, Tijuana, Mexicali, Ensenada, Rosarito, and Tecate. These cities make PST especially important for West Coast technology, media, trade, logistics, and cross-border business coordination.
What is the UTC offset for PST?
The UTC offset for PST is UTC-8. That means Pacific Standard Time is 8 hours behind Coordinated Universal Time, which is the key reference used when comparing PST with international time zones for calls, deadlines, and travel schedules.
Which countries use PST?
PST is used in Canada, Mexico, the Philippines, and the United States. This broad geographic relevance makes PST a common reference point for regional operations, customer support coverage, and teams working across Pacific-facing markets.
When does PST change?
PST changes when the applicable region moves from standard time to its daylight saving counterpart, PDT. Since PST is specifically the standard-time abbreviation, schedules should use the correct label at the time of the event so that recurring meetings and appointments do not become ambiguous.
Is PST just another name for Pacific Time?
Not exactly. PST refers specifically to Pacific Standard Time, while more general labels such as PT may be used as broader shorthand in some contexts; they are not always as precise when you need to know whether standard time or daylight time applies. For formal scheduling, PST is the clearer choice when you specifically mean the UTC-8 standard-time period.
Are there other abbreviations with the same UTC offset as PST?
Yes. Abbreviations with the same offset include AKDT, PT, and U. Even though they share the same UTC offset, they are not interchangeable in every context, so it is better to use PST when you want to communicate Pacific Standard Time clearly in business or travel planning.