Time in HMT and IDLW
The time difference between Heard and McDonald Islands Time (HMT) and International Date Line West Time (IDLW) is 17 hours. International Date Line West Time is 17 hours behind Heard and McDonald Islands Time.
This means 9am HMT is 4pm IDLW (previous day) and 5pm HMT is 12am IDLW.
Heard and McDonald Islands Time
- The current local time in HMT is 5:28 pm (July 18, 2026)
- HMT time zone offset is UTC+05:00
International Date Line West Time
- The current local time in IDLW is 12:28 am (July 19, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Heard and McDonald Islands Time to International Date Line West Time?
Subtract 17 hours from Heard and McDonald Islands Time to get International Date Line West Time.
Time in HMT
00:00
Time in IDLW
00:00
Use the slider above to convert Heard and McDonald Islands 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
| HMT | IDLW |
|---|---|
| 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 | 12am |
| 6pm | 1am |
| 7pm | 2am |
| 8pm | 3am |
| 9pm | 4am |
| 10pm | 5am |
| 11pm | 6am |