Boulder, MT, USA to RET
Time Difference
MDT (Mountain Daylight Time) is 10 hours behind Reunion Time
3:00 pm15:00 in Boulder, MT, USA is 1:00 am01:00 in RET
Boulder to RET call time
Best time for a conference call or a meeting is between 8am-10am in Boulder which corresponds to 6pm-8pm in RET
3:00 pm15:00 MDT (Mountain Daylight Time) (Boulder, MT, USA). Offset UTC -6:00 hours
1:00 am01:00 Reunion Time (RET). Offset UTC +4:00 hours
3:00 pm15:00 Boulder, MT, USA / 1:00 am01:00 RET
| Boulder, MT, USA | RET |
|---|---|
| 12am (midnight) | 10am |
| 1am | 11am |
| 2am | 12pm (noon) |
| 3am | 1pm |
| 4am | 2pm |
| 5am | 3pm |
| 6am | 4pm |
| 7am | 5pm |
| 8am | 6pm |
| 9am | 7pm |
| 10am | 8pm |
| 11am | 9pm |
| 12pm (noon) | 10pm |
| 1pm | 11pm |
| 2pm | 12am (midnight) |
| 3pm | 1am |
| 4pm | 2am |
| 5pm | 3am |
| 6pm | 4am |
| 7pm | 5am |
| 8pm | 6am |
| 9pm | 7am |
| 10pm | 8am |
| 11pm | 9am |
| 0:00 | 10:00 |
| 1:00 | 11:00 |
| 2:00 | 12:00 |
| 3:00 | 13:00 |
| 4:00 | 14:00 |
| 5:00 | 15:00 |
| 6:00 | 16:00 |
| 7:00 | 17:00 |
| 8:00 | 18:00 |
| 9:00 | 19:00 |
| 10:00 | 20:00 |
| 11:00 | 21:00 |
| 12:00 | 22:00 |
| 13:00 | 23:00 |
| 14:00 | 0:00 |
| 15:00 | 1:00 |
| 16:00 | 2:00 |
| 17:00 | 3:00 |
| 18:00 | 4:00 |
| 19:00 | 5:00 |
| 20:00 | 6:00 |
| 21:00 | 7:00 |
| 22:00 | 8:00 |
| 23:00 | 9:00 |
Boulder Information
Time Zone
Abbreviation / Name
MDT - Mountain Daylight Time
HAR - Heure Avancée des Rocheuses
HAR - Heure Avancée des Rocheuses
UTC / GMT Offset
-6:00 hours during Mountain Daylight Time, currently in use.
-6:00 hours during Heure Avancée des Rocheuses.
-6:00 hours during Heure Avancée des Rocheuses.
Daylight Saving Time Change
0:00 hours - DST is in use
Daylight Saving Time Starts
Sunday, March 9, 2025 at 2:00 am local time. DST starts annually the on second Sunday of March. Clocks are turned forward 0 hour to Sunday, March 9, 2025, 3:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Sunday, November 2, 2025 at 2:00 am local time. DST ends annually the on first Sunday of November. Clocks are turned backward 0 hour to Sunday, November 2, 2025, 1:00 am local standard time instead. Also called Fall Back or switch to Winter Time.
Boulder Facts
Country
USA
State
Montana
Alternative Names
Bolder, Bouldehr, Boulder, Boulder Valley, bo er de, bwldr, bwwldr mwntana, Болдер, Боулдер, Боулдэр, بولدر, بوولدر، مونتانا, 博尔德
Population
1,207
Currency
Dollar (USD)
Geographic Coordinates
46° 14' N Latitude / 112° 07' W Longitude
International Dialing Code
+1
Reunion Time
Offset: RET is 4 hours ahead Greenwich Mean Time (GMT) and is used in Africa
RET representations, usage and related time zones
W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
- +04 - basic short
- +0400 - basic
- +04:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
- +0400 - sign character (+) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four hour and zero minutes time differences to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
- Delta - Military abbreviation for RET
- D - short form of 'Delta'
Time zones with the GMT +4 offset:
- KUYT - Kuybyshev Time
- MSD - Moscow Daylight Time
- SAMT - Samara Time
- AMT - Armenia Time
- AZT - Azerbaijan Time
- D - Delta Time Zone
- GET - Georgia Standard Time
- GST - Gulf Standard Time
- MUT - Mauritius Time
- RET - Reunion Time
- SCT - Seychelles Time