Does it handle Daylight Saving Time?

Yes, the tool automatically adjusts for Daylight Saving Time based on the specific date you select, ensuring accurate conversions year-round.

Can I add multiple cities?

Yes, you can add as many cities as you need to the dashboard to compare times across your entire global network simultaneously.

Chicago to Auckland

+18h

Chicago

CDTSOURCE

USA · UTC-05:00☀ DST active

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Auckland

NZDT

New Zealand · UTC+13:00☀ DST active

HH06

MM00

(next day)06:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

Chicago

Auckland

12:00 AM

6:00 PM

2:00 AM

8:00 PM

4:00 AM

10:00 PM

6:00 AM

12:00 AM+1

8:00 AM

2:00 AM+1

10:00 AM

4:00 AM+1

12:00 PM

6:00 AM+1

2:00 PM

8:00 AM+1

4:00 PM

10:00 AM+1

6:00 PM

12:00 PM+1

8:00 PM

2:00 PM+1

10:00 PM

4:00 PM+1

Green rows indicate typical business hours (9 AM - 5 PM)

CDT and NZDT on the World Map

The map below highlights the CDT (Central Standard Time) and NZDT (New Zealand Standard Time) timezone regions across the globe.

CDT Zone

→

NZDT Zone

Explore all world timezones interactively →

CST – Central Standard Time

UTC-06:00

Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.

Countries in CST

United States (Central)Canada (Manitoba, Saskatchewan)MexicoGuatemalaHondurasEl SalvadorCosta RicaNicaraguaBelize

Major Cities in CST

ChicagoHoustonDallasSan AntonioMexico CityAustinWinnipegMemphisMilwaukeeNashvilleKansas CityNew OrleansMinneapolisGuatemala City

Key Facts about CST

•CST covers 20 US states fully or partially.
•Chicago and Houston are the two largest cities in the Central Time Zone.
•Mexico City, one of the world's most populous cities, operates on CST.
•CST is 1 hour behind EST and 2 hours ahead of PST.

Daylight Saving:Yes – switches to CDT

Learn more about CST on Wikipedia

NZST – New Zealand Standard Time

UTC+12:00

New Zealand Standard Time (NZST) is the time zone for New Zealand, 12 hours ahead of UTC.

Countries in NZST

New Zealand

Major Cities in NZST

AucklandWellingtonChristchurchHamiltonDunedin

Key Facts about NZST

•New Zealand is among the first major countries to see a new day.
•NZST is 17 hours ahead of EST.
•New Zealand observes DST from September to April (Southern Hemisphere summer).

Daylight Saving:Yes – switches to NZDT

Learn more about NZST on Wikipedia

About Chicago

Wikipedia

Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.

Population:2.7 million

Metro:9.5 million

Business Hours:8:00 AM - 5:00 PM CST

Currency:USD ($)

Stock Exchange:CME (Chicago Mercantile Exchange), CBOE

Key Landmarks

Willis TowerMillennium ParkCloud Gate (The Bean)Navy PierArt Institute of Chicago

Did You Know?

The Chicago Board of Trade is the world's oldest futures and options exchange.

Learn more about CDT timezone →

About Auckland

Wikipedia

Auckland operates on New Zealand Standard Time (NZST), UTC+12. As the first major city to see each day, Auckland opens global business ahead of all other markets.

Population:1.7 million

Metro:1.7 million

Business Hours:9:00 AM - 5:00 PM NZST

Currency:NZD (NZ$)

Stock Exchange:NZX (New Zealand Exchange)

Key Landmarks

Sky TowerAuckland Harbour BridgeAuckland War Memorial MuseumWaiheke IslandRangitoto Island

Did You Know?

Auckland is the first major city to see the sunrise each day (along with cities further east).

Learn more about NZDT timezone →

Everything You Need to Know About Chicago and Auckland Time

Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. Auckland runs on New Zealand Daylight Time (NZDT) at UTC+13:00, also currently on daylight saving time. That puts Chicago 18 hours ahead of Auckland — a difference of +18h at the current offsets.

In practice, when it is 9:00 AM in Chicago it is 3:00 AM in Auckland on the next day. Midnight in Chicago is 6:00 PM in Auckland. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.

Chicago to Auckland time conversion table

Chicago (CDT)	Auckland (NZDT)	Day
12:00 AM	6:00 PM	same day
6:00 AM	12:00 AM	next day
7:00 AM	1:00 AM	next day
8:00 AM	2:00 AM	next day
9:00 AM	3:00 AM	next day
12:00 PM	6:00 AM	next day
3:00 PM	9:00 AM	next day
5:00 PM	11:00 AM	next day
6:00 PM	12:00 PM	next day
9:00 PM	3:00 PM	next day

Why people convert Chicago to Auckland time

Scheduling a call from Chicago to Auckland: a 10:00 AM start in Chicago lands at 4:00 AM in Auckland the next day, so you can confirm the slot without doing the arithmetic yourself.
Handling a +18h gap: Chicago and Auckland have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in Auckland is 3:00 AM in Chicago.
Keeping family and friends in sync: knowing that 8:00 PM in Chicago is 2:00 PM in Auckland makes it easy to avoid calling at 3 AM.

Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +18h gap is not.
With a +18h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week Auckland does.
Chicago: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +18h gap.
Auckland: Clocks fall back on Sat, Apr 3, 2027. Any meeting series spanning that date will shift by an hour in local time.

About CST (Central Standard Time)

Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.

About NZST (New Zealand Standard Time)

New Zealand Standard Time (NZST) is the standard time zone for New Zealand and its dependencies. New Zealand is among the first countries to see a new calendar day. During summer (September to April), clocks advance to New Zealand Daylight Time (NZDT, UTC+13:00).

Best time to call between Chicago and Auckland

With a +18h offset there is no overlap inside a normal 9 AM – 5 PM day. Auckland opens at 9:00 AM NZDT, which is 3:00 AM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Chicago and Auckland have no shared working hours because of the +18h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Chicago is 18 hours ahead of Auckland (CDT UTC-05:00 → NZDT UTC+13:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.

🕐 Daylight Saving Time Info

Chicago

☀ Currently in DST

Standard: UTC-06:00 · DST: UTC-05:00

Clocks fall back on Sun, Nov 1, 2026

Auckland

☀ Currently in DST

Standard: UTC+12:00 · DST: UTC+13:00

Clocks fall back on Sat, Apr 3, 2027

Learn More About Time

Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Chicago and Auckland?

Chicago (CDT, UTC-05:00) is 18 hours ahead of Auckland (NZDT, UTC+13:00). The gap is currently +18h.

How do I convert Chicago time to Auckland time?

Add +18h to Chicago local time. For example, 9:00 AM in Chicago is 3:00 AM in Auckland (next day).

What time is it in Auckland right now?

Auckland uses NZDT at UTC+13:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +18h offset from Chicago.

What is the best time to call Auckland from Chicago?

There is no shared working-hours window because of the +18h gap. The closest option is 1:00 PM in Chicago, which is 7:00 AM in Auckland.

Which is ahead, Chicago or Auckland?

Chicago is 18 hours ahead of Auckland. When it is 12:00 PM in Chicago it is 6:00 AM in Auckland.

Do Chicago and Auckland use different time zones?

Chicago (USA) uses CDT at UTC-05:00, while Auckland (New Zealand) uses NZDT at UTC+13:00. The IANA identifiers are America/Chicago and Pacific/Auckland.

Does daylight saving time affect the Chicago–Auckland difference?

Both zones observe DST, so the difference stays at +18h for most of the year and only changes during the weeks when their transition dates do not line up.

Which other cities share Chicago's time zone?

CDT also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.

Which countries use CDT, Chicago's zone?

CDT is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.

Is there a day difference between Chicago and Auckland?

Sometimes. The +18h gap is large enough that 8:00 PM or later in Chicago already falls on the next day in Auckland.

What is the time difference between Chicago and Auckland?

Auckland is +18h from Chicago.

What timezone is Chicago in?

Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.

What timezone is Auckland in?

Auckland operates on New Zealand Standard Time (NZST), UTC+12. As the first major city to see each day, Auckland opens global business ahead of all other markets.

What are the business hours in Chicago?

Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.

What are the business hours in Auckland?

Standard business hours in Auckland are 9:00 AM - 5:00 PM NZST.

What is the best time to schedule a call between Chicago and Auckland?

The best overlap for a call is when both cities are in business hours. Chicago works 8:00 AM - 5:00 PM CST and Auckland works 9:00 AM - 5:00 PM NZST (+18h difference). Try scheduling during the overlapping window for maximum convenience.

What currencies are used in Chicago and Auckland?

Chicago uses USD ($) while Auckland uses NZD (NZ$). Check current exchange rates when planning travel or business between these cities.

How do Chicago and Auckland compare in size?

Chicago has a population of approximately 2.7 million (metro: 9.5 million), while Auckland has approximately 1.7 million (metro: 1.7 million).

What are the major landmarks in Chicago and Auckland?

Chicago is known for Willis Tower, Millennium Park, Cloud Gate (The Bean). Auckland is famous for Sky Tower, Auckland Harbour Bridge, Auckland War Memorial Museum.

Do Chicago and Auckland have stock exchanges?

Yes. Chicago has the CME (Chicago Mercantile Exchange), CBOE and Auckland has the NZX (New Zealand Exchange). The +18h time difference affects trading hour overlaps between these exchanges.