Oregon Time Zone

The Oregon Time Zone is part of the Pacific Time Zone. It is thus 8 hours behind Greenwich Mean Time (GMT -8). From March to November, clocks are advanced by one hour to observe daylight saving time. Oregon is on Pacific Daylight Time (PDT), which is GMT -7 during this time.

It’s worth noting that some sections of Oregon, notably Malheur County and a tiny piece of Hood River County, operate on Mountain Time. This means that they are GMT -7 during normal time and GMT -6 during daylight saving time.

Furthermore, if you are calling someone in Oregon or booking a meeting with someone from there, confirm the correct time zone to avoid confusion or missed meetings.

History of Oregon Time Zone

The time zone history of Oregon is quite interesting, reflecting broader changes in timekeeping and regional development in the United States.

Pre-Standard Time Era (Before 1883): Before the introduction of standard time zones, local times in Oregon, as in other parts of the world, were set according to the position of the sun. This meant that different towns had slightly different times, which could be quite confusing, especially for railroads and telegraph operators.

Introduction of Standard Time Zones (1883): The United States adopted standard time zones on November 18, 1883, which were set by the railroads to standardize their schedules. Oregon, located in the western part of the country, was placed in the Pacific Time Zone. This change helped to synchronize time across long distances and was essential for efficient transportation and communication.

Daylight Saving Time (DST) Adoption: Oregon, like many other states, adopted Daylight Saving Time during the 20th century. DST involves setting the clock forward by one hour during the warmer months to extend evening daylight. The specific adoption dates and adherence to DST have varied over the years, influenced by both federal regulations and state decisions.

Recent Debates and Changes: In recent years, there have been discussions in Oregon, as in many other states, about potentially making changes to how time is observed. This includes debates over whether to adopt Daylight Saving Time year-round, remain on Standard Time year-round, or continue with the current system of changing clocks twice a year.

Throughout its history, Oregon’s time zone practices have been influenced by broader national trends, technological advancements, and evolving societal needs. The state’s approach to timekeeping reflects a balance between regional characteristics and the need for consistency across larger geographic areas.

What Time Zone in Oregon?

The state of Oregon is divided into two time zones. Almost the entire state is in the Pacific Time Zone and follows daylight savings, therefore there are two distinct time zones depending on the season, including Portland, Salem, and Eugene.

  • Pacific Standard Time (PST): – 8:00 UTC/GMT (behind)
  • Pacific Daylight Time (PDT): – 7:00 UTC/GMT (behind)

Only the southeast corner of Malheur County is in the Mountain Time zone and observes daylight savings, so there are two different time zones depending on the time of year.

  • Mountain Standard Time (MST): – 7:00 UTC/GMT (behind)
  • Mountain Daylight Time (MDT): – 6:00 UTC/GMT (behind)

Details About Oregon Time Zone

Oregon is mostly in the Pacific Time Zone, with the exception of a small section on the eastern border that is in the Mountain Time Zone. Ontario is a city in the Mountain Standard Time Zone. Portland, Eugene, Bend, Baker City, Ashland, and La Grande are all in the Pacific Standard Time Zone. During the summer, Idaho time zones observe Daylight Saving Time.

The little east border region currently observes Mountain Daylight Time, whereas the majority of the country observes Pacific Daylight Time.

CountryUnited States
Oregon Time Zone NamePacific Time Zone and Mountain Time Zone
Time Zones2
Mountain Time Zone AbbreviationsMST (Mountain Standard Time), MDT (Mountain Daylight Time)
Pacific Time Zone AbbreviationsPST (Pacific Standard Time), PDT (Pacific Daylight Time)
Mountain Time Zone – Standard Time OffsetGMT/UTC – 7h
Mountain Time Zone – Daylight Saving Time OffsetGMT/UTC – 6h
Pacific Time Zone – Standard Time OffsetGMT/UTC – 8h
Pacific Time Zone – Daylight Saving Time OffsetGMT/UTC – 7h
Daylight Saving Time UsageOregon does utilize Daylight Saving Time
Daylight Saving Start DateSunday, March 12, 2023, at 2:00 AM local time
Daylight Saving End DateSunday, November 5, 2023, at 2:00 AM local time
Latitude45° 31′ 25″ North
Longitude122° 40′ 34″ West

Daylight Saving Time (DST) in Oregon

Oregon observes daylight savings time, as mandated by the Uniform Time Act of 1966. During daylight savings, the time changes from Standard to Daylight, so PST becomes PDT and MST becomes MDT, depending on where you are.

It runs from the second Sunday in March to the first Sunday in November. In March, the clock is advanced from 02.00 am to 03.00 am (losing an hour of sleep during the night). In November, the time is advanced by one hour, from 3 a.m. to 2 a.m., granting you an additional hour of sleep. Clocks that “spring forward and fall back” is one way to remember the sequence of movements. The whole duration of daylight savings time is 34 weeks or approximately 65% of the year.

The Time Difference Between Arizona vs Oregon

People often get confused by the time difference between Arizona and Oregon, since the two states use different clocks. Arizona does not change to Daylight Saving Time (DST), so it stays on Mountain Standard Time (MST) all year. The Pacific Time Zone, which includes Oregon, changes from Pacific Standard Time (PST) to Pacific Daylight Time (PDT) during DST. 

Most of the time, when Oregon is on Pacific Standard Time, Arizona is one hour ahead of Oregon. But when Oregon changes to Pacific Daylight Time, the time difference between the two states gets closer to zero, and the clocks in both states are set to the same time. When planning trips or events between Arizona and Oregon, it’s important to keep these time differences in mind.

Schedule a Phone Call from Oregon to California

Because Oregon (OR) and California (CA) currently have identical time zones, you can call someone during your usual business hours and it will be the same time in both states. If you are scheduling a call, remember to check for daylight savings time adjustments.

If you live in Oregon and wish to call a buddy in California, try dialing them between the hours of 7:00 AM and 11:00 PM. Because California (CA) and Oregon (OR) share the same time zone, this will be between 7 AM and 11 PM their time.

If you’re available at any time, but need to reach someone at work in California, try between 9:00 AM and 5:00 PM your time. During normal business hours, 9 a.m. to 5 p.m. is the optimum time to contact them.

9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM


Finally, the Oregon time zone, which is part of the Pacific Time Zone in the United States, is critical for scheduling and timekeeping inside the state. During Daylight Saving Time, Oregon uses two time zones: Pacific Standard Time (PST) and Pacific Daylight Time (PDT). The time difference between Oregon and other states or areas varies depending on the season and whether or not DST is in place. 

Understanding the Oregon time zone is critical for accurate coordination, planning, and communication within the state as well as when engaging with people or businesses in other time zones. It enables efficient scheduling and productive relationships in both personal and professional settings.

Frequently Asked Questions (FAQs)

What is the Oregon Time Zone?

The Pacific Time Zone, which is observed in the western United States, includes the Oregon Time Zone.

Does Oregon have 2 time zones?

Thirteen. In Oregon and Idaho, the Mountain and Pacific time zones coexist. Nebraska, Kansas, Texas, North, and South Dakota are separated among the Central and Mountain time zones.

Is Oregon on Pacific Standard Time now?

While the majority of Oregon is in the Pacific Time Zone, the majority of Malheur County is in Mountain Time due to its economic ties to Idaho. South Dakota is split between two time zones.

Is Oregon 3 hours behind New York?

Oregon is three hours behind New York in time.

Does Oregon observe Daylight Saving Time?

Yes, Oregon participates in Daylight Saving Time. The clocks are advanced by one hour during the summer months to Pacific Daylight Time (PDT), and then shifted back by one hour during the winter months to Pacific Standard Time (PST).

What is the time difference between Oregon and other states?

Oregon’s time difference from other states is determined by their respective time zones. Oregon is typically one hour ahead of states in the Mountain Time Zone and two hours behind states in the Central Time Zone during Standard Time.

When does Daylight Saving Time start and end in Oregon?

Oregon observes Daylight Saving Time from the second Sunday of March to the first Sunday of November.