When Do the Clocks Change in Idaho?

Time Zones in Idaho

Idaho 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. The line follows the Salmon River across the state. Ten northern counties are Pacific; everything south is Mountain.

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 Boise, 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 Boise.

What Stands Out About Idaho

The clock runs well ahead of the sun here

In Boise solar noon falls at 1:31 PM, which puts the clock 91 minutes ahead of the sun. States near the western edge of their time zone get long, late evenings in summer and mornings that stay dark well past the start of the school run in winter. It is the same rule everywhere; Idaho just sits at the far end of it.

A northern state feels the change hardest

Daylight in Boise swings by 6h 30m across the year, from 15h 26m at midsummer down to 8h 56m in December. Losing an hour of evening on top of that is why the November change lands so much harder in Idaho than it does in the south.

One clock, 18 minutes of real difference

Nampa and Idaho Falls read exactly the same time, but they are 4.5 degrees of longitude apart — about 18 minutes of real solar time. The sun sets that much later at the western end of Idaho than the eastern end, every single day, and no clock change affects it.

The clock changes at the state line

Idaho borders 3 states on a different clock right now: Nevada, Oregon, Washington. Crossing any of those borders moves the time, which matters for anyone commuting, delivering or scheduling across the line — and for phones, which switch silently and without asking.

The Next Clock Changes in Idaho

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 Idaho, 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 Idaho

Right now the two sides of Idaho 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 Idaho Keeps the Clock It Does

Idaho's northern panhandle runs on Pacific Time with Spokane, Washington, which is the nearest city of any size — the state capital in Boise is an eight-hour drive away and an hour ahead. The Salmon River, not a county line or a state border, is what separates the two clocks.

The practical consequence is that every time difference involving Idaho shifts by an hour on Sunday, November 1, 2026 — and with 3 neighbouring states already on a different clock, this is a state where knowing the date matters at the border as much as it does across the country.

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 Idaho today. A state border is the most common place to lose or gain an hour without expecting to.

Current Time in Idaho Cities