Redwood City, California operates on Pacific Time, shifting between Pacific Standard Time (PST, UTC-8) during the winter months and Pacific Daylight Time (PDT, UTC-7) during the summer. Because the city sits in San Mateo County within the San Francisco Bay Area, it follows the exact same schedule as the rest of California and the broader Pacific Time Zone.
If you are trying to coordinate a call, schedule a meeting, or check local business hours, understanding how these seasonal changes and offsets work will keep you on track. Here is a complete breakdown of Redwood City time, daylight saving rules, and regional time differences.
Current Time Zone and Seasonal Shifts
The local time in Redwood City depends entirely on the time of year due to Daylight Saving Time (DST).
- Pacific Standard Time (PST): Observed from early November to mid-March. The UTC offset is -8 hours.
- Pacific Daylight Time (PDT): Observed from mid-March to early November. The UTC offset is -7 hours.
Clocks spring forward by one hour on the second Sunday in March at 2:00 AM local time and fall back by one hour on the first Sunday in November at 2:00 AM local time. For official global time standards and coordinated checks, you can reference the National Institute of Standards and Technology time portal.
Regional Time Differences Across the US
When communicating between Redwood City and other regions in the United States, keeping track of hour gaps is essential since not all territories observe time changes uniformly.
- Eastern Time (ET): New York and Miami are 3 hours ahead of Redwood City.
- Central Time (CT): Chicago and Dallas are 2 hours ahead of Redwood City.
- Mountain Time (MT): Denver and Phoenix are 1 hour ahead. Note that most of Arizona stays on standard time year-round, changing the math during summer months.
- Alaska Time (AKST/AKDT): Alaska is 1 hour behind Redwood City.
- Hawaii-Aleutian Time (HST): Hawaii does not observe DST, making Hawaii 2 hours behind Redwood City during summer and 3 hours behind during winter.
For international reference, business hours often align with UTC or Greenwich Mean Time. You can monitor precise global time conversions via the World Clock.
Common Scheduling Mistakes to Avoid
Managing cross-country schedules or planning virtual events involving Redwood City often leads to a few recurring errors.
- Ignoring transition weekends: The US and Europe shift their clocks on different dates in spring and autumn. For a brief window of a few weeks, time gaps between California and European cities shrink or expand by an hour.
- Assuming Arizona matches Mountain Time year-round: Because Arizona (outside the Navajo Nation) opts out of Daylight Saving Time, its relationship with California shifts when PDT begins and ends.
- Confusing UTC offsets: Always verify whether the target date falls inside PST or PDT to avoid being an hour early or late for a meeting.
Frequently Asked Questions
Does Redwood City stay on Daylight Saving Time all year?
No. Redwood City observes Daylight Saving Time, moving clocks forward in March and back in November.
What is the IANA time zone identifier for Redwood City?
The official database identifier used for computer systems and scheduling software is America/Los_Angeles.
How many hours behind London is Redwood City?
During standard time, Redwood City is 8 hours behind London (GMT/UTC). During daylight saving time, the gap becomes 7 hours because California shifts to UTC-7 while the UK observes British Summer Time.
What county is Redwood City located in?
Redwood City is located in San Mateo County, situated on the San Francisco Peninsula.
