Time in MDT and IDLW
The time difference between Mountain Daylight Time (MDT) and International Date Line West Time (IDLW) is 6 hours. International Date Line West Time is 6 hours behind Mountain Daylight Time.
This means 9am MDT is 3am IDLW and 5pm MDT is 11am IDLW.
Mountain Daylight Time
- The current local time in MDT is 2:10 am (July 9, 2026)
- MDT time zone offset is UTC-06:00
International Date Line West Time
- The current local time in IDLW is 8:10 am (July 9, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Mountain Daylight Time to International Date Line West Time?
Subtract 6 hours from Mountain Daylight Time to get International Date Line West Time.
Time in MDT
00:00
Time in IDLW
00:00
Use the slider above to convert Mountain Daylight Time to International Date Line West Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| MDT | IDLW |
|---|---|
| 12am | 6pm |
| 1am | 7pm |
| 2am | 8pm |
| 3am | 9pm |
| 4am | 10pm |
| 5am | 11pm |
| 6am | 12am |
| 7am | 1am |
| 8am | 2am |
| 9am | 3am |
| 10am | 4am |
| 11am | 5am |
| 12pm | 6am |
| 1pm | 7am |
| 2pm | 8am |
| 3pm | 9am |
| 4pm | 10am |
| 5pm | 11am |
| 6pm | 12pm |
| 7pm | 1pm |
| 8pm | 2pm |
| 9pm | 3pm |
| 10pm | 4pm |
| 11pm | 5pm |