Time in IST and IDLW
The time difference between Irish Standard Time (IST) and International Date Line West Time (IDLW) is 13 hours. International Date Line West Time is 13 hours behind Irish Standard Time.
This means 9am IST is 8pm IDLW (previous day) and 5pm IST is 4am IDLW.
Irish Standard Time
- The current local time in IST is 2:39 pm (July 18, 2026)
- IST time zone offset is UTC+01:00
International Date Line West Time
- The current local time in IDLW is 1:39 am (July 19, 2026)
- IDLW time zone offset is UTC-12:00
How to convert Irish Standard Time to International Date Line West Time?
Subtract 13 hours from Irish Standard Time to get International Date Line West Time.
Time in IST
00:00
Time in IDLW
00:00
Use the slider above to convert Irish Standard 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
| IST | IDLW |
|---|---|
| 12am | 11am |
| 1am | 12pm |
| 2am | 1pm |
| 3am | 2pm |
| 4am | 3pm |
| 5am | 4pm |
| 6am | 5pm |
| 7am | 6pm |
| 8am | 7pm |
| 9am | 8pm |
| 10am | 9pm |
| 11am | 10pm |
| 12pm | 11pm |
| 1pm | 12am |
| 2pm | 1am |
| 3pm | 2am |
| 4pm | 3am |
| 5pm | 4am |
| 6pm | 5am |
| 7pm | 6am |
| 8pm | 7am |
| 9pm | 8am |
| 10pm | 9am |
| 11pm | 10am |