Time in IDLW and IRST
The time difference between International Date Line West Time (IDLW) and Iran Standard Time (IRST) is 15 hours 30 minutes. Iran Standard Time is 15 hours 30 minutes ahead of International Date Line West Time.
This means 9am IDLW is 12:30am IRST (next day) and 5pm IDLW is 8:30am IRST (next day).
International Date Line West Time
- The current local time in IDLW is 12:38 am (July 19, 2026)
- IDLW time zone offset is UTC-12:00
Iran Standard Time
- The current local time in IRST is 4:08 pm (July 18, 2026)
- IRST time zone offset is UTC+03:30
How to convert International Date Line West Time to Iran Standard Time?
Add 15 hours 30 minutes to International Date Line West Time to get Iran Standard Time.
Time in IDLW
00:00
Time in IRST
00:00
Use the slider above to convert International Date Line West Time to Iran Standard 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
| IDLW | IRST |
|---|---|
| 12am | 3:30pm |
| 1am | 4:30pm |
| 2am | 5:30pm |
| 3am | 6:30pm |
| 4am | 7:30pm |
| 5am | 8:30pm |
| 6am | 9:30pm |
| 7am | 10:30pm |
| 8am | 11:30pm |
| 9am | 0:30am |
| 10am | 1:30am |
| 11am | 2:30am |
| 12pm | 3:30am |
| 1pm | 4:30am |
| 2pm | 5:30am |
| 3pm | 6:30am |
| 4pm | 7:30am |
| 5pm | 8:30am |
| 6pm | 9:30am |
| 7pm | 10:30am |
| 8pm | 11:30am |
| 9pm | 12:30pm |
| 10pm | 1:30pm |
| 11pm | 2:30pm |