Boulder to PST Time Converter
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Quick answers
Selected conversion
6:00 am06:00 MDT (UTC-6), Oct 12, 2026 = 5:00 am05:00 PDT (UTC-7), Oct 12, 2026
Boulder is 1 hour ahead of PDT.
How the time difference changes
For most of the year, Boulder is 1 hour ahead of PDT. From Nov 1, 2026 to Mar 14, 2027, Boulder is 1 hour ahead of PST. Briefly around clock changes, Boulder is 2 hours ahead of PST or Boulder and PDT have the same time.
For most of the year, working hours of 9:00 am to 5:00 pm in Boulder correspond to 8:00 am to 4:00 pm in PDT. At other times of the year, working hours of 9:00 am to 5:00 pm in Boulder correspond to 8:00 am to 4:00 pm in PST.For most of the year, working hours of 09:00 to 17:00 in Boulder correspond to 08:00 to 16:00 in PDT. At other times of the year, working hours of 09:00 to 17:00 in Boulder correspond to 08:00 to 16:00 in PST.
Compare Boulder time with PST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
MDT (Mountain Daylight Time) is 1 hour ahead of Pacific Daylight Time.
6:00 am06:00 in Boulder, CO, USA is 5:00 am05:00 in PDT
Boulder to PDT call time
Best time for a conference call or a meeting is between 10am-5pm10:00-17:00 in Boulder which corresponds to 9am-4pm09:00-16:00 in PDT
6:00 am06:00 MDT (Mountain Daylight Time) (Boulder, CO, USA). Offset UTC -6:00 hours
5:00 am05:00 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
6:00 am06:00 Boulder, CO, USA / 5:00 am05:00 PDT
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Boulder Time Zone and Facts
Time Zone
MST – Mountain Standard Time, UTC-7 (standard time)
Boulder Facts
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
Today the shaded areas are on UTC−7 (PDT).
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Pacific Standard Time (PST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
PST representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
- Uniform - Military abbreviation for PST
- U - short form of 'Uniform'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone