Current Time in IANA America/Boise Timezone
IANA Name: America/Boise
Standard Offset: UTC −07:00
Daylight Saving: Yes
DST Offset: UTC −06:00
DST Abbreviation: MDT
Currently Observing DST: Yes ✅
America/Boise: The Mountain Time Zone of Idaho and Beyond
The America/Boise time zone is the IANA time zone identifier for the Mountain Time (MT) region that includes Boise, Idaho, and surrounding areas in the United States. It observes Mountain Standard Time (MST) at UTC-07:00 during winter and Mountain Daylight Time (MDT) at UTC-06:00 during summer, following the standard daylight saving time schedule of the United States.
Where America/Boise Applies
America/Boise covers most of the state of Idaho, excluding the northern panhandle region which uses America/Los_Angeles (Pacific Time). Specifically, it applies to the southern two-thirds of Idaho, including the capital Boise, as well as the cities of Meridian, Nampa, Idaho Falls, Pocatello, and Twin Falls. The zone also includes the Oregon communities of Ontario and Vale, which are in Malheur County, Oregon, and follow Mountain Time due to their economic ties with Boise. In the United States, this zone is part of the Mountain Time Zone, which is shared by states like Colorado, Utah, Wyoming, Montana, and New Mexico, but America/Boise is the designated zone for the Idaho region.
Offset and Abbreviation
The standard offset is UTC-07:00, which is 7 hours behind Coordinated Universal Time. During daylight saving time, the offset shifts to UTC-06:00, 6 hours behind UTC. The abbreviations used are MST (Mountain Standard Time) for the standard period and MDT (Mountain Daylight Time) for the daylight saving period. These abbreviations are widely recognized in the United States and Canada.
Daylight Saving Time Behavior
America/Boise observes daylight saving time (DST) as mandated by U.S. federal law. Clocks spring forward one hour on the second Sunday of March at 2:00 AM local standard time, becoming 3:00 AM MDT. They fall back one hour on the first Sunday of November at 2:00 AM local daylight time, becoming 1:00 AM MST. Recent and upcoming transition dates include: March 9, 2025 (to MDT), November 2, 2025 (to MST), March 8, 2026 (to MDT), and November 1, 2026 (to MST). This pattern repeats annually, resulting in a 7-month period of MDT (mid-March to early November) and a 5-month period of MST (early November to mid-March).
Countries and Cities
The only country using America/Boise is the United States. Key cities within the zone include Boise (the anchor city), Meridian, Nampa, Caldwell, Idaho Falls, Pocatello, Twin Falls, and Lewiston (though Lewiston is in the Pacific Time zone, it is not part of America/Boise). In Oregon, the city of Ontario uses this zone. The zone is contiguous with other Mountain Time zones in the U.S., such as America/Denver, which covers Colorado and other parts of the Mountain region.
Business Hours and Scheduling
For scheduling calls or business hours, note that America/Boise is 2 hours behind Eastern Time (ET) during standard time (MST vs. EST) and 2 hours behind during daylight time (MDT vs. EDT). It is 1 hour ahead of Pacific Time (PT) year-round (MST is 1 hour ahead of PST, MDT is 1 hour ahead of PDT). For international coordination, Boise is 7 hours behind UTC during standard time and 6 hours behind during DST. Common overlaps with European business hours: during MST, Boise is 8 hours behind Central European Time (CET), so a 9 AM CET is 1 AM MST. During MDT, Boise is 8 hours behind Central European Summer Time (CEST), so 9 AM CEST is 2 AM MDT. For Asia, Boise is 15 hours behind Japan Standard Time (JST) during MST and 14 hours behind during MDT, making afternoon calls in Boise early morning the next day in Tokyo.
Comparison with Other Zones at the Same Offset
Other IANA zones at UTC-07:00 (MST) include America/Denver, America/Edmonton, America/Phoenix, and America/Ciudad_Juarez. However, note that America/Phoenix does not observe DST, remaining on MST year-round, while America/Denver and America/Edmonton follow the same DST pattern as America/Boise. America/Creston and America/Dawson_Creek are also at UTC-07:00 but do not observe DST. This means that during summer, America/Boise (MDT) is one hour ahead of America/Phoenix (MST).
Frequently Asked Questions
What is the current time in America/Boise?
You can check the current local time on any world clock website by searching for Boise, Idaho, or using the IANA time zone identifier America/Boise. The time will be either MST (UTC-07:00) or MDT (UTC-06:00) depending on the date.
Does America/Boise observe daylight saving time?
Yes, America/Boise observes daylight saving time. Clocks spring forward on the second Sunday of March and fall back on the first Sunday of November, following U.S. federal law.
What is the difference between America/Boise and America/Denver?
Both zones are at the same offset (UTC-07:00 standard, UTC-06:00 DST) and observe the same DST rules. The difference is geographic: America/Boise covers parts of Idaho and eastern Oregon, while America/Denver covers Colorado and other areas. For most purposes, they are interchangeable in terms of time.
Is Boise on the same time as Phoenix?
Not during daylight saving time. Boise observes DST, so from March to November it is on MDT (UTC-06:00), while Phoenix remains on MST (UTC-07:00) year-round. During standard time (November to March), they are both on MST and have the same time.
What cities are in the America/Boise time zone?
Major cities include Boise, Meridian, Nampa, Idaho Falls, Pocatello, and Twin Falls in Idaho, as well as Ontario in Oregon. The zone covers most of Idaho except the northern panhandle.
How do I convert America/Boise time to my local time?
Use a time zone converter tool. America/Boise is UTC-07:00 during standard time and UTC-06:00 during daylight time. Subtract the appropriate offset from your local UTC offset to find the difference.