Time in GMT and IDLW
The time difference between Greenwich Mean Time (GMT) and International Date Line West Time (IDLW) is 12 hours. International Date Line West Time is 12 hours behind Greenwich Mean Time.
This means 9am GMT is 9pm IDLW (previous day) and 5pm GMT is 5am IDLW.
Greenwich Mean Time
- The current local time in GMT is 11:43 am (July 18, 2026)
- GMT time zone offset is UTC+00:00
International Date Line West Time
- The current local time in IDLW is 11:43 pm (July 18, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Greenwich Mean Time to International Date Line West Time?
Subtract 12 hours from Greenwich Mean Time to get International Date Line West Time.
Time in GMT
00:00
Time in IDLW
00:00
Use the slider above to convert Greenwich Mean 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
| GMT | IDLW |
|---|---|
| 12am | 12pm |
| 1am | 1pm |
| 2am | 2pm |
| 3am | 3pm |
| 4am | 4pm |
| 5am | 5pm |
| 6am | 6pm |
| 7am | 7pm |
| 8am | 8pm |
| 9am | 9pm |
| 10am | 10pm |
| 11am | 11pm |
| 12pm | 12am |
| 1pm | 1am |
| 2pm | 2am |
| 3pm | 3am |
| 4pm | 4am |
| 5pm | 5am |
| 6pm | 6am |
| 7pm | 7am |
| 8pm | 8am |
| 9pm | 9am |
| 10pm | 10am |
| 11pm | 11am |