ClockPair
Find your overlap
A LITTLE LESS BACK-AND-FORTH

Find a time.
Make it work for both.

Find shared working hours, a start time that survives the seasons, and the weeks your meeting needs attention.

NEXT WORKING DATE

15:15 Castries · 09:00 Chatham Islands

November 16, 2026 in Castries; 2026-11-17 in Chatham Islands. The complete 60-minute meeting fits both working windows. The annual analysis below shows where the schedule needs adjustment.

TIME & DATE
LCFROMUTC−04:00

St. Lucia · AST

Fri, 13 Nov
NZTOUTC+13:45

New Zealand · +1345

2:45AM
Sat, 14 Nov+1 day
Chatham Islands is 17h 45m ahead of Castries.+1 day
Find your moment
Working hoursOutside hours
CastriesYour reference
Chatham IslandsConverted time
Tap an hour to explore · November 13, 2026Dates follow Castries
Add to calendar
THE TIME DIFFERENCE17h 45mahead

Chatham Islands compared with Castries.

SHARED WORKING HOURSDay off2026-11-13

Next working date: 2026-11-16

THROUGH THE SEASONS2different offsets

Clock changes affect your time difference.

WORKING HOURS & MEETINGS

Best meeting times: Castries and Chatham Islands

Fri, Nov 13, 2026: no scheduled working hours for Chatham Islands within this source date.

Next date with working hours in both places: Mon, Nov 16, 2026. 1h 45m shared: 15:15–17:00 Castries = 09:00–10:45 Chatham Islands (2026-11-17).

Use Mon, Nov 16, 2026 →

Your conversion date stays 2026-11-13 until you choose another date or a suggested meeting.

Selected date: working schedule is off

Set each person’s local working hours.

Castries
to
Chatham Islands
to

Local working days, overnight shifts and the entire meeting duration are checked.

Suggestions for Mon, Nov 16, 202660 MIN

Every minute of the meeting fits both working windows.

For a 60-minute meeting, the last start in this window is 4:00 PM Castries.
PLAN BEYOND A SINGLE DAY

Castries–Chatham Islands working hours through 2026

Every date calculated with your working windows. 261 selected Castries workdays; public holidays are not applied.

Daily CSV
Least shared time0h
Most common1h 45m
Most shared time1h 45m
Days without a 60-min slot152 / 261

One fixed start time does not fit every working day.

152 selected host workdays cannot fit the complete meeting. Adjust working days, hours or duration above, or use different seasonal meeting times.

How shared working time changes by month

Bars show the mean shared hours per selected host workday. The range captures all those days, including clock-change dates. A full bar represents 8h.

Jan
1h 21m0h–1h 45m range5 days without a full slot
Feb
1h 24m0h–1h 45m range4 days without a full slot
Mar
1h 26m0h–1h 45m range4 days without a full slot
Apr
42m0h–1h 45m range20 days without a full slot
May
34m0h–45m range21 days without a full slot
Jun
37m0h–45m range22 days without a full slot
Jul
35m0h–45m range23 days without a full slot
Aug
36m0h–45m range21 days without a full slot
Sep
45m0h–1h 45m range19 days without a full slot
Oct
1h 21m0h–1h 45m range5 days without a full slot
Nov
1h 25m0h–1h 45m range4 days without a full slot
Dec
1h 27m0h–1h 45m range4 days without a full slot
Explore every date in 2026

Select a date to check its schedule. Color shows shared hours; grey marks dates outside the selected host working weekdays. Each date also reports how many starts fit the complete meeting.

No shared timeUp to 1 hour1–2 hours2–3 hoursMore than 3 hoursHost day off

Jan 2026

Feb 2026

Mar 2026

Apr 2026

May 2026

Jun 2026

Jul 2026

Aug 2026

Sep 2026

Oct 2026

Nov 2026

Dec 2026

Castries: 09:00–17:00, Mon, Tue, Wed, Thu, Fri. Chatham Islands: 09:00–17:00, Mon, Tue, Wed, Thu, Fri.

Calculation details and repeated hours

Overnight shifts belong to their start weekday. Host workday means the source calendar date. Repeated local times use the first occurrence.

A SCHEDULE WITH FORESIGHT

Your next 12 weekly meetings

Anchored to Castries at 09:00. 12 meetings need attention.

0 meetings at a different local time
Date in CastriesCastriesChatham IslandsWorking-hours check
2026-11-139:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2026-11-209:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2026-11-279:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2026-12-049:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2026-12-119:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2026-12-189:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2026-12-259:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2027-01-019:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2027-01-089:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2027-01-159:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2027-01-229:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours
2027-01-299:00 AM UTC−04:002:45 AM +1 day60 person-min outside hours

This checks weekly occurrences against the published time-zone rules and your working windows. It does not access calendars or account for leave and holidays. Calendar export creates a single meeting.

THE BIGGER PICTURE

A year of time differences.

How Chatham Islands compares with Castries throughout 2026.

2026
JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC
+17h 45m
+16h 45m
+17h 45m

Chatham Islands changes its UTC offset in 2026. Castries keeps one UTC offset this year.

See exact change periods
From (UTC, inclusive)Until (UTC, exclusive)Chatham Islands vs Castries
1 Jan 2026, 00:00 UTC4 Apr 2026, 14:00 UTC17h 45m ahead
4 Apr 2026, 14:00 UTC26 Sep 2026, 14:00 UTC16h 45m ahead
26 Sep 2026, 14:00 UTC1 Jan 2027, 00:00 UTC17h 45m ahead
CLOCK CHANGES

What changes at the next clock adjustment?

April 4, 2027Local transition date
  • Chatham Islands clocks go back by 1h on April 4, 2027.

After this change, Castries is 16h 45m behind Chatham Islands.

Exact clock readings and UTC transition

2027-04-03T14:00:00.000Z.

Chatham Islands: 2027-04-04 03:44 UTC+13:45 → 2027-04-04 02:45 UTC+12:45.

Readings are one real minute apart. Future rules may change.

Exact periods outside the most common difference in 2026

The most frequent difference has Chatham Islands 17h 45m ahead relative to Castries. Exceptions:

From (UTC, inclusive)Until (UTC, exclusive)Compared with Castries
4 Apr 2026, 14:00 UTC26 Sep 2026, 14:00 UTC16h 45m ahead

Related time-zone meanings and conversions

Chatham Islands to Castries Reverse the conversion direction.

Choose the question you need answered

Best meeting timesAnnual overlap, year-round starts and weekly schedule checks
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Calculated with IANA 2026e. Working hours are your preferences; public holidays and calendar availability are not included. Our methodology

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