California (CA) is 1 hour behind Colorado (CO).

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Current time

  Colorado (CO)   1:04 AM on Friday, Oct 24, 2014

  California (CA)   12:04 AM on Friday, Oct 24, 2014

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Map from Colorado to California

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find a flight to California

Meeting planner for Colorado (CO) and California (CA)

To schedule a conference call or plan a meeting at the best time for both parties, you should try between 10:00 AM and 5:00 PM your time in Colorado. That will end up being between 9:00 AM and 4:00 PM in California. The chart on the right shows overlapping times.

Schedule a phone call from Colorado to California

If you live in Colorado and you want to call a friend in California, you can try calling them between 8:00 AM and 12:00 AM your time. This will be between 7AM - 11PM their time, since California (CA) is 1 hour behind Colorado (CO).

If you're available any time, but you want to reach someone in California at work, you may want to try between 10:00 AM and 6:00 PM your time. This is the best time to reach them from 9AM - 5PM during normal working hours.


UTC-6 hours     UTC-7 hours
Colorado     California
10:00 AM     9:00 AM
11:00 AM     10:00 AM
12:00 PM     11:00 AM
1:00 PM     12:00 PM
2:00 PM     1:00 PM
3:00 PM     2:00 PM
4:00 PM     3:00 PM
5:00 PM     4:00 PM

Colorado (CO)

State: Colorado
Country: United States
Category: states
Time zone: America/Denver (UTC/GMT -6 hours)

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California (CA)

State: California
Country: United States
Category: states
Time zone: America/Los_Angeles (UTC/GMT -7 hours)

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Time difference

Travelmath provides an online time zone converter for places all over the world. You can enter airports, cities, states, countries, or zip codes to find the time difference between any two locations. The calculator will automatically adjust for daylight saving time (DST) in the summer. You can use it as a meeting planner or a scheduler to find the best time to make international phone calls. World time zones have a positive or negative offset computed from Coordinated Universal Time (UTC), or Greenwich Mean Time (GMT). UTC has uniform seconds defined by International Atomic Time (TAI), with leap seconds announced at irregular intervals to compensate for the Earth's slowing rotation. The tz database or zoneinfo database uses the closest city, rather than the more common Eastern, Central, Mountain or Pacific time zones in the United States. Countries often change their daylight saving rules, so please help us stay current by letting us know if you find any pages that need updates.