When Do the Clocks Change in Oregon?

Time Zones in Oregon

Oregon is not on a single clock. It spans 2 zones, which is why two places inside the same state can be an hour apart.

Where the line falls. Malheur County, on the Idaho border, is the exception. Ontario and Nyssa keep Mountain Time because they function as suburbs of Boise.

What Actually Changes: Sunrise and Sunset

The hour on the clock is not the part anyone notices. This is what the change does to daylight in Portland, comparing the day before with the day after.

The amount of daylight barely moves across those two days — roughly the same number of hours either side. What moves is where those hours sit: the clock change shifts them from the evening to the morning, or back again. Full sunrise and sunset detail for Portland.

What Stands Out About Oregon

Solar noon is at 12:57 PM, not noon

The sun reaches its highest point over Portland at 12:57 PM, so the clock runs 57 minutes ahead of the sun. That gap has nothing to do with Daylight Saving Time and never changes: it is simply where Oregon sits inside an hour-wide time zone.

A northern state feels the change hardest

Daylight in Portland swings by 6h 59m across the year, from 15h 41m at midsummer down to 8h 42m in December. Losing an hour of evening on top of that is why the November change lands so much harder in Oregon than it does in the south.

Dark before the working day ends

After the change the sun sets in Portland at 4:56 PM. For most of the winter that means leaving work in the dark, which is the single most common complaint about the November change and the reason states keep voting for permanent Daylight Saving Time they are not allowed to adopt.

The Next Clock Changes in Oregon

The next move is backwards, which is the one people notice: an hour more sleep, and sunset arriving before most of the working day is over. US clocks change on the second Sunday in March and the first Sunday in November. These are the next dates that rule produces for Oregon, computed from the current time zone rules rather than a fixed list — if the rules change, these dates change with them.

The Two Halves of Oregon

Right now the two sides of Oregon are 1 hour apart. That gap holds all year, because both sides change their clocks on the same dates — they simply start from different offsets.

Why Oregon Keeps the Clock It Does

Oregon's time zone line ignores the state line entirely: Malheur County sits on Mountain Time because its economy runs through Boise, an hour ahead, rather than Portland, six hours west. Oregon has also passed a permanent-DST bill that would apply only to its Pacific-zone portion.

The practical consequence is that every time difference involving Oregon shifts by an hour on Sunday, November 1, 2026. Anything recurring across that date — a standing call, an automated report, a flight connection — is worth checking, especially against places that change on a different date or not at all.

To check an exact gap on an exact date, use the time zone converter, or the meeting planner for a whole group at once.

Crossing the State Line

These neighbouring states are on a different clock from Oregon today. A state border is the most common place to lose or gain an hour without expecting to.

Current Time in Oregon Cities