Time in IST and CHADT
The time difference between Irish Standard Time (IST) and Chatham Daylight Time (CHADT) is 12 hours 45 minutes. Chatham Daylight Time is 12 hours 45 minutes ahead of Irish Standard Time.
This means 9am IST is 9:45pm CHADT and 5pm IST is 5:45am CHADT (next day).
Irish Standard Time
- The current local time in IST is 2:38 pm (July 18, 2026)
- IST time zone offset is UTC+01:00
Chatham Daylight Time
- The current local time in CHADT is 3:23 am (July 19, 2026)
- CHADT time zone offset is UTC+13:45
How to convert Irish Standard Time to Chatham Daylight Time?
Add 12 hours 45 minutes to Irish Standard Time to get Chatham Daylight Time.
Time in IST
00:00
Time in CHADT
00:00
Use the slider above to convert Irish Standard Time to Chatham Daylight 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 | CHADT |
|---|---|
| 12am | 12:45pm |
| 1am | 1:45pm |
| 2am | 2:45pm |
| 3am | 3:45pm |
| 4am | 4:45pm |
| 5am | 5:45pm |
| 6am | 6:45pm |
| 7am | 7:45pm |
| 8am | 8:45pm |
| 9am | 9:45pm |
| 10am | 10:45pm |
| 11am | 11:45pm |
| 12pm | 0:45am |
| 1pm | 1:45am |
| 2pm | 2:45am |
| 3pm | 3:45am |
| 4pm | 4:45am |
| 5pm | 5:45am |
| 6pm | 6:45am |
| 7pm | 7:45am |
| 8pm | 8:45am |
| 9pm | 9:45am |
| 10pm | 10:45am |
| 11pm | 11:45am |