Washington, DC, USA to Boulder, CO, USA
Compare Washington time with Boulder time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
EST (Eastern Standard Time) is 2 hours ahead of MST (Mountain Standard Time)
7:00 am07:00 in Washington, DC, USA is 5:00 am05:00 in Boulder, CO, USA
Washington to Boulder call time
Best time for a conference call or a meeting is between 11am-5pm in Washington which corresponds to 9am-3pm in Boulder
7:00 am07:00 EST (Eastern Standard Time) (Washington, DC, USA). Offset UTC -5:00 hours
5:00 am05:00 MST (Mountain Standard Time) (Boulder, CO, USA). Offset UTC -7:00 hours
7:00 am07:00 Washington, DC, USA / 5:00 am05:00 Boulder, CO, USA
| Washington, DC, USA | Boulder, CO, USA |
|---|---|
| 12am (midnight) | 10pm |
| 1am | 11pm |
| 2am | 12am (midnight) |
| 3am | 1am |
| 4am | 2am |
| 5am | 3am |
| 6am | 4am |
| 7am | 5am |
| 8am | 6am |
| 9am | 7am |
| 10am | 8am |
| 11am | 9am |
| 12pm (noon) | 10am |
| 1pm | 11am |
| 2pm | 12pm (noon) |
| 3pm | 1pm |
| 4pm | 2pm |
| 5pm | 3pm |
| 6pm | 4pm |
| 7pm | 5pm |
| 8pm | 6pm |
| 9pm | 7pm |
| 10pm | 8pm |
| 11pm | 9pm |
| 00:00 | 22:00 |
| 01:00 | 23:00 |
| 02:00 | 00:00 |
| 03:00 | 01:00 |
| 04:00 | 02:00 |
| 05:00 | 03:00 |
| 06:00 | 04:00 |
| 07:00 | 05:00 |
| 08:00 | 06:00 |
| 09:00 | 07:00 |
| 10:00 | 08:00 |
| 11:00 | 09:00 |
| 12:00 | 10:00 |
| 13:00 | 11:00 |
| 14:00 | 12:00 |
| 15:00 | 13:00 |
| 16:00 | 14:00 |
| 17:00 | 15:00 |
| 18:00 | 16:00 |
| 19:00 | 17:00 |
| 20:00 | 18:00 |
| 21:00 | 19:00 |
| 22:00 | 20:00 |
| 23:00 | 21:00 |
Washington Information
Time Zone
Abbreviation / Name
EDT - Eastern Daylight Time
EST - Eastern Standard Time
EST - Eastern Standard Time
UTC / GMT Offset
-4:00 hours during Eastern Daylight Time, currently in use.
-5:00 hours during Eastern Standard Time.
-5:00 hours during Eastern Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Sunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.Daylight Saving Time Ends
Sunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.Washington Facts
Country
USA
State
Washington, D.C.
Alternative Names
District of Columbia, Federal Capital, Federal City, Federal Town, Ouasinkton, Ranatakariahshne, Ranatakariáhshne, Territory of Columbia, Vashington, Vasingtonas, Vasingtonia, Vašingtonas, WAS, Washington, Washington City, Washington D. C., Washington D.C., Washington DC, Waszyngton, hua sheng dun te qu, wosingteon D.C., wosingteon DC, Ουάσιγκτον, Вашингтон, 华盛顿特区, 워싱턴 D.C., 워싱턴 DC
Population
601,723
Currency
Dollar (USD)
Geographic Coordinates
38° 53' N Latitude / 77° 02' W Longitude
International Dialing Code
+1
Boulder Information
Time Zone
Abbreviation / Name
MDT - Mountain Daylight Time
MST - Mountain Standard Time
MST - Mountain Standard Time
UTC / GMT Offset
-6:00 hours during Mountain Daylight Time, currently in use.
-7:00 hours during Mountain Standard Time.
-7:00 hours during Mountain Standard Time.
Daylight Saving Time Change
+1:00 hour - DST is in use
Daylight Saving Time Starts
Sunday, March 8, 2026 at 2:00 am local time. DST starts annually on the 2nd Sunday of March. Clocks are turned forward 1 hour to Sunday, March 8, 2026 at 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.Daylight Saving Time Ends
Sunday, November 1, 2026 at 2:00 am local time. DST ends annually on the 1st Sunday of November. Clocks are turned backward 1 hour to Sunday, November 1, 2026 at 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.Boulder Facts
Country
USA
State
Colorado
Alternative Names
Bolder, Boulder, Bouldur, WBU, ba'uldara, bo de, boldara, bolde xr, boldeo, boruda, bwldr, bwldr klradw, Болдер, Боулдер, Боулдър, בולדר, بولدر, بولدر، کلرادو, بولڈر، کولوراڈو, बाउल्डर, बोल्डर, โบลเดอร์, ボルダー, 波德, 볼더
Population
107,349
Currency
Dollar (USD)
Geographic Coordinates
40° 00' N Latitude / 105° 16' W Longitude
International Dialing Code
+1