The short answer
Chatham Daylight Time is 12 hours 45 minutes ahead of Irish Standard Time.
Chatham Daylight Time☀
3:09:55pm
+13:45 · UTC+13:45 · Thu, Oct 15
Irish Standard Time☾
2:24:55am
IST · UTC+01:00 · Thu, Oct 15
Read across to convert
Chatham Daylight Time
+13:45 · UTC+13:45
Irish Standard Time
IST · UTC+01:00
Click any row to pin that hour across both zones.
12amThu
11:15amWed ·−1d
WORK1am
12:15pmWed ·−1d
WORK2am
1:15pmWed ·−1d
WORK3am
2:15pmWed ·−1d
WORK4am
3:15pmWed ·−1d
WORK5am
4:15pmWed ·−1d
WORK6am
5:15pmWed ·−1d
7am
6:15pmWed ·−1d
8am
7:15pmWed ·−1d
9am
WORK8:15pmWed ·−1d
10am
WORK9:15pmWed ·−1d
11am
WORK10:15pmWed ·−1d
12pm
WORK11:15pmWed ·−1d
1pm
WORK12:15amThu
2pm
WORK1:15am
NOW
3pm
WORK2:15am
4pm
WORK3:15am
5pm
4:15am
6pm
5:15am
7pm
6:15am
8pm
7:15am
9pm
8:15am
10pm
9:15am
WORK11pm
10:15am
WORKdaylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Chatham Daylight Time
7am–8am
Irish Standard Time
6:15pm–7:15pm
previous day
Popular conversions
Quick reference.
9amChatham Daylight Time=8:15pmIrish Standard Time · prev day
12pmChatham Daylight Time=11:15pmIrish Standard Time · prev day
3pmChatham Daylight Time=2:15amIrish Standard Time
5pmChatham Daylight Time=4:15amIrish Standard Time
9pmChatham Daylight Time=8:15amIrish Standard Time
In context
What each side covers.
Chatham Daylight Time
3:09pm+13:45 · UTC+13:45
Chatham Daylight Time
Irish Standard Time
2:24amIST · UTC+01:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
6:24pm
India Standard Time
6:54am
Pacific Time to India12 hours 30 minutes behind
Eastern Daylight Time
9:24pm
Central European Time
3:24am
Eastern Time to Central Europe6 hours behind
India Standard Time
6:54am
Eastern Daylight Time
9:24pm
India to Eastern Time9 hours 30 minutes ahead
British Summer Time
2:24am
India Standard Time
6:54am
London to India4 hours 30 minutes behind
Pacific Daylight Time
6:24pm
Eastern Daylight Time
9:24pm
Pacific to Eastern Time3 hours behind
Central European Time
3:24am
India Standard Time
6:54am
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Chatham Daylight Time and Irish Standard Time. Can't find what you need? Email [email protected].
- What is the time difference between Chatham Daylight Time and Irish Standard Time?
- Chatham Daylight Time is 12 hours 45 minutes ahead of Irish Standard Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 9am in Chatham Daylight Time, what time is it in Irish Standard Time?
- 9am in Chatham Daylight Time is 8:15pm in Irish Standard Time on the previous day. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
- What's the best time for a call between Chatham Daylight Time and Irish Standard Time?
- There's no comfortable 9-to-5 overlap between Chatham Daylight Time and Irish Standard Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — +13:45 and IST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.