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Guide4 min read2026年1月30日

米国西海岸の現在時刻は?(PST/PDT)

米国西海岸は太平洋時間(PT)を使用しています。

What Time Is It on the US West Coast?

The US West Coast operates on Pacific Time (PT):

PST (Pacific Standard Time): UTC-8 (November – March)
PDT (Pacific Daylight Time): UTC-7 (March – November)

Major cities in Pacific Time

Los Angeles, California
San Francisco, California
San Diego, California
Seattle, Washington
Portland, Oregon
Las Vegas, Nevada
San Jose, California
Sacramento, California
Vancouver, Canada (also uses PT)

When does the clock change?

DST transitions follow US federal law:

Spring forward: Second Sunday of March at 2:00 AM
Fall back: First Sunday of November at 2:00 AM

Pacific Time vs other US zones

ZoneUTC Offset (Standard)vs Pacific
Pacific (PT)UTC-8
Mountain (MT)UTC-7+1 hour
Central (CT)UTC-6+2 hours
Eastern (ET)UTC-5+3 hours

Pacific Time vs the world

CityTime difference from LA
New York+3 hours
London+8 hours
Paris+9 hours
Tokyo+17 hours
Sydney+19 hours

Check the current time in [Los Angeles](/city/los-angeles), [San Francisco](/city/san-francisco), or [Seattle](/city/seattle).

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