What states are in the Pacific Time zone?

California and Washington entirely, plus nearly all of Nevada and Oregon and the northern panhandle of Idaho. The exceptions are most of Malheur County in eastern Oregon and the town of West Wendover in Nevada, both of which keep Mountain Time to match their neighbours across the state line.

Is it PST or PDT at the moment?

PDT from the second Sunday in March to the first Sunday in November, and PST for the rest of the year. Pacific Standard Time is UTC minus eight and Pacific Daylight Time is UTC minus seven. Writing PT instead avoids the question entirely and is correct all year.

How many hours behind New York is California?

Three hours, all year round. Both coasts change their clocks on the same dates, so the gap never varies. When the New York stock market opens at 9:30 a.m. Eastern, it is 6:30 a.m. in Los Angeles and San Francisco.

Is Arizona the same as California in summer?

Yes. Arizona stays on Mountain Standard Time all year, which is the same offset as Pacific Daylight Time, so from March to November Phoenix and Los Angeles read the same clock. In winter Arizona is one hour ahead of California.

Pacific Time Zone Explained

The West Coast keeps the last clock on the American mainland, and everyone who works with it feels the consequences. Pacific Time is three hours behind the East Coast, which means the trading day opens before breakfast in Los Angeles and the national news arrives while the office is still busy. Understanding the zone means understanding that gap.

This article sets out which states and areas keep Pacific Time, the difference between PST and PDT, the arithmetic of the coast-to-coast gap, and what the whole arrangement does to a working day on the western edge. For the current hour, open the Pacific Time clock.

Which States Are on Pacific Time?

California and Washington are entirely on Pacific Time, along with nearly all of Nevada and Oregon. The northern Idaho panhandle keeps it too, which is the one part of the zone that surprises people.

That gives the zone the whole coastline south of Alaska, the Sierra Nevada and Cascade ranges, and the interior north-west as far as Coeur d'Alene. Around fifty million people live on this clock, most of them in the corridor from San Diego through Los Angeles and the Bay Area up to Portland and Seattle.

The zone is younger than the country's railways but older than most of its cities. Standard zones were given legal force by the Standard Time Act of 1918, and the authority to adjust their boundaries now rests with the Department of Transportation, which considers petitions county by county. Las Vegas, Sacramento, Fresno, Spokane and Tacoma all keep Pacific Time alongside the coastal cities, and so does the whole of the Californian agricultural interior.

PST vs PDT: What Is the Difference?

Pacific Standard Time is UTC minus eight and runs through the winter. Pacific Daylight Time is UTC minus seven and runs from the second Sunday in March to the first Sunday in November. PT is the generic label and is correct all year.

The distinction matters as soon as anything is written down. An invitation marked PST in August is claiming an offset the West Coast is not using, and any system that converts it literally will place the meeting an hour out. The same trap applies on the other side of the country and is examined in ET vs EST vs EDT. Where a document must be unambiguous, write the UTC offset alongside the abbreviation.

The Three-Hour Gap to the East Coast

The gap between Pacific Time and Eastern Time is exactly three hours, in every month. Both zones move their clocks on the same dates, so noon in Los Angeles is always 3:00 p.m. in New York and 2:00 p.m. in Chicago.

The stability is worth noting because it is not universal. The distance from the West Coast to Honolulu changes with the seasons, and so does the distance to Phoenix, since neither Hawaii nor Arizona observes the seasonal change. Arizona is the odd one: it matches Pacific Time exactly from March to November and then falls an hour ahead of it for the winter, which catches out anyone with a standing call to Phoenix.

What Pacific Time Means for the Working Day

It front-loads it. The New York markets open at 9:30 a.m. Eastern, which is 6:30 a.m. on the Pacific clock, so anyone in finance on the West Coast starts several hours before a conventional office day.

The effect ripples outward. National conference calls scheduled for the convenience of the East Coast land at breakfast time in California, while afternoon on the West Coast is evening in New York and largely unanswerable. The practical shared window is noon to 5:00 p.m. Eastern, or 9:00 a.m. to 2:00 p.m. Pacific, which is the subject of the guide to calling across US time zones. Live broadcasts carry the same asymmetry: a programme aired at nine in the evening in New York would reach the West Coast at six, so networks have historically delayed the western feed.

Where the Zone's Edges Fall

The boundary is neat along most of its length and ragged at three points, each for the usual reason: local commerce points the other way.

Oregon: Most of Malheur County in the far east keeps Mountain Time, because it belongs to the economy of Boise rather than Portland.
Nevada: West Wendover, on the Utah line, keeps Mountain Time so it can share a clock with Salt Lake City.
Idaho: The state is divided, with the panhandle north of the Salmon River on Pacific Time and Boise and the south on Mountain.
Alaska: The state to the north keeps its own zone an hour behind, though the Alaska panhandle ran on Pacific Time until the state consolidated its zones in 1983.

These irregularities are typical rather than exceptional; the wider pattern appears in states split between two time zones.

How Pacific Time Compares Westward

Going further west the gaps continue. Alaska Time is one hour behind Pacific Time, so 9:00 a.m. in Seattle is 8:00 a.m. in Anchorage, and the two change their clocks together, which keeps that hour constant.

Hawaii is the exception. It is two hours behind the West Coast in winter and three hours behind in summer, because it never moves. That makes a call from Los Angeles to Honolulu simple in December and awkward in July, when the Hawaiian morning starts three hours after the Californian one. Both are shown side by side on the Alaska and Hawaii clock page.

Looking the other way across the ocean, the zone has one genuine advantage. Tokyo is seventeen hours ahead of Pacific Standard Time and sixteen ahead of Pacific Daylight Time, which sounds hopeless until you notice that a late afternoon on the West Coast is the following morning in Asia. That makes the end of a Pacific working day the natural moment to reach Japan, Korea or Australia, and it is one reason so much trans-Pacific business is run from Seattle, San Francisco and Los Angeles rather than from the eastern seaboard.

Conclusion

Pacific Time covers California, Washington, almost all of Nevada and Oregon, and the northern Idaho panhandle, running at UTC minus eight as PST in winter and UTC minus seven as PDT in summer. Its defining feature is the fixed three-hour gap to the East Coast, which opens the markets before breakfast, compresses the national working window into the western morning, and makes the middle of the day the only reliable meeting ground. Check the current hour on the Pacific Time clock, compare every zone on the US time board, or start from ustime.now.

Pacific Time Explained: States, Offsets and the Three-Hour Gap