How many hours ahead of UTC is the Chatham Islands?

The live offset is shown in the UTC offset panel above and is recalculated from the Pacific/Chatham time zone every second, so it is correct on today's date, including during daylight saving time.

What does "+1 day" mean on the roller?

It means the selected UTC time falls on the following calendar date in the Chatham Islands. Late-evening UTC times often land after midnight locally, and the badge on the roller warns you before you book a meeting on the wrong day.

What is the difference between GMT and UTC?

GMT is a time zone used by the UK in winter; UTC is a time standard maintained by atomic clocks. They show the same clock reading, but UTC is the technical reference used in aviation, computing and science.

Do the live clocks change when I rotate the roller?

No. The clocks at the top always show the real current time. The roller is a lookup tool for any other UTC time, so you can plan ahead without losing sight of now.

UTC to CHAST/CHADT Converter

See the live UTC time next to the current time in the Chatham Islands, check today's real offset, and roll through any UTC time to find the matching CHAST/CHADT time — including when the two zones fall on different dates.

SELECT COUNTRY / TIME ZONE

SELECT SECOND COUNTRY / TIME ZONE

SELECTED COUNTRY

🇳🇿

New Zealand (Chatham)

Chatham Islands Time

09:10:11

CHAST/CHADT

Sun, 04 Oct 2026UTC +13:45

REFERENCE CLOCK

🌐

UTC

Coordinated Universal Time

19:25:11

UTC

Sat, 03 Oct 2026UTC +00:00

SECOND COUNTRY

🇺🇸

United States (Eastern)

US Eastern Time

15:25:11

Sat, 03 Oct 2026UTC -04:00

THE CLOCKS ABOVE ALWAYS SHOW THE LIVE CURRENT TIME. THE ROLLER BELOW IS A LOOKUP TOOL — ROTATING IT NEVER CHANGES THEM.

UTC ↔ CHAST/CHADT ↔ ET INTERACTIVE ROLLER

DRAG · SCROLL · SWIPE

CHAST/CHADTUTCET

▶◀

13:45

14:15

14:45

15:15

15:45

16:15

16:45

17:15

17:45

18:15

18:45

19:15

19:45

20:15

20:45

21:15

21:45

22:15

22:45

23:15

23:45

00:15

00:45

01:15

01:45

02:15

02:45

03:15

03:45

04:15

04:45

05:15

05:45

06:15

06:45

07:15

07:45

08:15+1 DAY

08:45+1 DAY

09:15+1 DAY

09:45

10:15

10:45

11:15

11:45

12:15

12:45

13:15

SYNCED

00:00

00:30

01:00

01:30

02:00

02:30

03:00

03:30

04:00

04:30

05:00

05:30

06:00

06:30

07:00

07:30

08:00

08:30

09:00

09:30

10:00

10:30

11:00

11:30

12:00

12:30

13:00

13:30

14:00

14:30

15:00

15:30

16:00

16:30

17:00

17:30

18:00

18:30

19:00

19:30

20:00

20:30

21:00

21:30

22:00

22:30

23:00

23:30

SYNCED

20:00

20:30

21:00

21:30

22:00

22:30

23:00

23:30

00:00

00:30

01:00

01:30

02:00

02:30

03:00

03:30

04:00

04:30

05:00

05:30

06:00

06:30

07:00

07:30

08:00

08:30

09:00

09:30

10:00

10:30

11:00

11:30

12:00

12:30

13:00

13:30

14:00

14:30

15:00

15:30

16:00

16:30

17:00

17:30

18:00

18:30

19:00

19:30

UTC reference date: Sat, 03 Oct 2026. The roller wraps within this date.

ROLLER SELECTION

Offsets below apply to the selected time.

SELECTED TIMES

CHAST/CHADT 08:45 (+1d)

Sun, 04 Oct 2026

UTC 19:00

Sat, 03 Oct 2026

ET 15:00

Sat, 03 Oct 2026

OFFSETS & DAY

NEXT DAY

CHAST/CHADT UTC +13:45

ET UTC -04:00

UTC +00:00

TIME DIFFERENCE AT SELECTED TIME

CHAST/CHADT is 13 hours 45 minutes ahead of UTC

ET is 4 hours behind UTC

UTC +13:45

UTC +00:00

UTC -04:00

New Zealand (Chatham) is 17 hours 45 minutes ahead of United States (Eastern)

🇳🇿 NEW ZEALAND (CHATHAM)

CHAST/CHADT · 09:10:11

🌐 UTC

UTC · 19:25:11

🇺🇸 UNITED STATES (EASTERN)

ET · 15:25:11

TIME RELATIONSHIP MAP

UTCCHAST/CHADTET

LIVE

This hourly table is for today in UTC. Use the converter above to choose a different date or an exact minute.

24-HOUR UTC → CHAST/CHADT REFERENCE (UTC DATE: 2026-10-03)
UTC	CHAST/CHADT	Local date
00:00	13:45	Sat, 03 Oct 2026Same day
01:00	14:45	Sat, 03 Oct 2026Same day
02:00	15:45	Sat, 03 Oct 2026Same day
03:00	16:45	Sat, 03 Oct 2026Same day
04:00	17:45	Sat, 03 Oct 2026Same day
05:00	18:45	Sat, 03 Oct 2026Same day
06:00	19:45	Sat, 03 Oct 2026Same day
07:00	20:45	Sat, 03 Oct 2026Same day
08:00	21:45	Sat, 03 Oct 2026Same day
09:00	22:45	Sat, 03 Oct 2026Same day
10:00	23:45	Sat, 03 Oct 2026Same day
11:00	00:45	Sun, 04 Oct 2026Next day in Chatham Islands
12:00	01:45	Sun, 04 Oct 2026Next day in Chatham Islands
13:00	02:45	Sun, 04 Oct 2026Next day in Chatham Islands
14:00	03:45	Sun, 04 Oct 2026Next day in Chatham Islands
15:00	04:45	Sun, 04 Oct 2026Next day in Chatham Islands
16:00	05:45	Sun, 04 Oct 2026Next day in Chatham Islands
17:00	06:45	Sun, 04 Oct 2026Next day in Chatham Islands
18:00	07:45	Sun, 04 Oct 2026Next day in Chatham Islands
19:00	08:45	Sun, 04 Oct 2026Next day in Chatham Islands
20:00	09:45	Sun, 04 Oct 2026Next day in Chatham Islands
21:00	10:45	Sun, 04 Oct 2026Next day in Chatham Islands
22:00	11:45	Sun, 04 Oct 2026Next day in Chatham Islands
23:00	12:45	Sun, 04 Oct 2026Next day in Chatham Islands

What is UTC to CHAST/CHADT?

Coordinated Universal Time (UTC) is the world's time standard: it never shifts for seasons and every other zone is described as an offset from it. Chatham Islands Time (CHAST/CHADT) is the clock used in the Chatham Islands. Converting UTC to CHAST/CHADT means adding that offset to the UTC reading.

The Chatham Islands are 45 minutes ahead of mainland New Zealand. Late UTC conversions often land on the following local date.

How to convert UTC to CHAST/CHADT

Take the UTC time, apply the CHAST/CHADT offset at that specific date and time, and roll the date forward or back if the result crosses midnight. The interactive roller does all three steps for you: UTC is in the middle, CHAST/CHADT is on the left and the second selected location is on the right, and a day badge appears whenever the local date differs.

Because CHAST/CHADT observes daylight saving time, the gap to UTC is not fixed — every clock and table on this page is calculated live from the Pacific/Chatham IANA database, and the selected result uses the offset for its selected UTC instant.

UTC to CHAST/CHADT conversion examples

The reference table below the tool lists every UTC hour against the matching CHAST/CHADT time for today, so you can copy a conversion without touching the roller.

Meetings scheduled in UTC (open-source calls, market opens, flight times) convert straight to Waitangi, Chatham Islands local time.
Server logs and API timestamps are usually UTC — read them in CHAST/CHADT to know when an event really happened locally.
Cross-border calls: compare the live clocks before you dial the Chatham Islands.

Does CHAST/CHADT change for daylight saving time?

The Chatham Islands use UTC +12:45 in standard time and UTC +13:45 during daylight saving time.

Frequently Asked Questions

How many hours ahead of UTC is the Chatham Islands?: The live offset is shown in the UTC offset panel above and is recalculated from the Pacific/Chatham time zone every second, so it is correct on today's date, including during daylight saving time.
What does "+1 day" mean on the roller?: It means the selected UTC time falls on the following calendar date in the Chatham Islands. Late-evening UTC times often land after midnight locally, and the badge on the roller warns you before you book a meeting on the wrong day.
What is the difference between GMT and UTC?: GMT is a time zone used by the UK in winter; UTC is a time standard maintained by atomic clocks. They show the same clock reading, but UTC is the technical reference used in aviation, computing and science.
Do the live clocks change when I rotate the roller?: No. The clocks at the top always show the real current time. The roller is a lookup tool for any other UTC time, so you can plan ahead without losing sight of now.