PST
Pacific Standard Time
UTC−8 — No daylight saving time
Abbreviation
PST
UTC Offset
UTC−8
Full Name
Pacific Standard Time
DST
No
About PST — Pacific Standard Time
Pacific Standard Time (PST) is UTC−8, the standard time for the US West Coast during winter months. Los Angeles, San Francisco, Seattle, and Las Vegas all use PST in winter. Silicon Valley—home to Apple, Google, Meta, and hundreds of major tech companies—operates on PST/PDT, making it the tech industry's home time zone. PST is active from the first Sunday in November to the second Sunday in March, when it switches to PDT (UTC−7).
Countries Using PST
- United States (western coast, winter)
- Canada (British Columbia, winter)
Major Cities in PST
Conversion Examples for PST
| UTC Time | PST (UTC−8) |
|---|---|
| 00:00 UTC | 16:00 PST |
| 06:00 UTC | 22:00 PST |
| 09:00 UTC | 01:00 PST |
| 12:00 UTC | 04:00 PST |
| 15:00 UTC | 07:00 PST |
| 18:00 UTC | 10:00 PST |
| 21:00 UTC | 13:00 PST |
Related Time Zones
Tools
About PST (PST)
PST (UTC−8) is a standard time zone designation used by United States (western coast, winter), Canada (British Columbia, winter). Time zone abbreviations like PST refer to a specific UTC offset rather than a geographic region — multiple time zones around the world may share the same offset while using different local names.
When scheduling internationally, it is more reliable to refer to a city name or IANA time zone identifier (like America/New_York or Asia/Dubai) than to a short abbreviation, since abbreviations are not globally standardised and can be ambiguous — for example, CST refers to both Central Standard Time (UTC−6) in North America and China Standard Time (UTC+8).
Use the conversion table on this page to see what any UTC hour maps to in PST, and use the tools below to convert between PST and any other time zone or city in real time.
UTC Offset vs IANA Time Zone: What's the Difference?
UTC Offset
A UTC offset like UTC+4 or UTC−5 is a simple number expressing how many hours and minutes a location is ahead of or behind Coordinated Universal Time. It is fixed and does not carry any information about DST rules or transitions.
IANA Time Zone
An IANA identifier like Europe/London or Asia/Tokyo is a database entry that includes the full history of UTC offset changes, DST rules, and historical exceptions for that location. IANA identifiers should always be preferred in software and scheduling systems.
Convert PST Time
PST — Frequently Asked Questions
PST is UTC−8, the standard time zone for the US and Canadian West Coast, active from the first Sunday of November to the second Sunday of March, when it switches to PDT (UTC−7).
PST (UTC−8) is 3 hours behind EST (UTC−5). When it is 12:00 PM EST, it is 9:00 AM PST.
Los Angeles, San Francisco, San Jose (Silicon Valley), Seattle, Portland, Las Vegas, and Vancouver (Canada) all use PST in winter.