Chicago to AEDT
+16hChicago
CDTSOURCEAEDT
AEDTGreen rows indicate typical business hours (9 AM - 5 PM)
CDT and AEDT on the World Map
The map below highlights the CDT (Central Standard Time) and AEDT (Australian Eastern Daylight Time) timezone regions across the globe.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •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.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
About Chicago
WikipediaChicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
The Chicago Board of Trade is the world's oldest futures and options exchange.
Chicago vs AEDT: Offsets, DST and Best Call Times
Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. That puts Chicago 16 hours ahead of AEDT — a difference of +16h at the current offsets.
In practice, when it is 9:00 AM in Chicago it is 1:00 AM in AEDT on the next day. Midnight in Chicago is 4:00 PM in AEDT.Chicago observes daylight saving time while AEDT does not, so the gap narrows or widens by an hour part of the year.
Chicago to AEDT time conversion table
| Chicago (CDT) | AEDT (AEDT) | Day |
|---|---|---|
| 12:00 AM | 4:00 PM | same day |
| 6:00 AM | 10:00 PM | same day |
| 7:00 AM | 11:00 PM | same day |
| 8:00 AM | 12:00 AM | next day |
| 9:00 AM | 1:00 AM | next day |
| 12:00 PM | 4:00 AM | next day |
| 3:00 PM | 7:00 AM | next day |
| 5:00 PM | 9:00 AM | next day |
| 6:00 PM | 10:00 AM | next day |
| 9:00 PM | 1:00 PM | next day |
Why people convert Chicago to AEDT time
- Scheduling a call from Chicago to AEDT: a 10:00 AM start in Chicago lands at 2:00 AM in AEDT the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +16h gap: Chicago and AEDT 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 AEDT is 1:00 AM in Chicago.
- Watching a live event or market open: Chicago viewers need 1:00 AM in AEDT to catch a 9:00 AM start there, and 8:00 AM if the event is anchored to Chicago.
- Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +16h gap is not.
- With a +16h gap there is no shared 9-to-5 window, so alternate the early start: one week Chicago takes the early slot, the next week AEDT 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 +16h gap.
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 AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
Best time to call between Chicago and AEDT
With a +16h offset there is no overlap inside a normal 9 AM – 5 PM day. AEDT opens at 9:00 AM AEDT, which is 1:00 AM in Chicago, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Chicago and AEDT have no shared working hours because of the +16h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Chicago is 16 hours ahead of AEDT (CDT UTC-05:00 → AEDT UTC+11:00). 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
AEDT
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Chicago and AEDT?
Chicago (CDT, UTC-05:00) is 16 hours ahead of AEDT (AEDT, UTC+11:00). The gap is currently +16h.
How do I convert Chicago time to AEDT time?
Add +16h to Chicago local time. For example, 9:00 AM in Chicago is 1:00 AM in AEDT (next day).
What time is it in AEDT right now?
AEDT uses AEDT at UTC+11:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +16h offset from Chicago.
What is the best time to call AEDT from Chicago?
There is no shared working-hours window because of the +16h gap. The closest option is 1:00 PM in Chicago, which is 5:00 AM in AEDT.
Which is ahead, Chicago or AEDT?
Chicago is 16 hours ahead of AEDT. When it is 12:00 PM in Chicago it is 4:00 AM in AEDT.
Do Chicago and AEDT use different time zones?
Chicago (USA) uses CDT at UTC-05:00, while AEDT uses AEDT at UTC+11:00. The IANA identifiers are America/Chicago and Australia/Sydney.
Does daylight saving time affect the Chicago–AEDT difference?
Yes at the moment: Chicago is on daylight saving time and AEDT is not, so the +16h gap shifts by an hour when exactly one of them changes clocks.
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 AEDT?
Sometimes. The +16h gap is large enough that 8:00 PM or later in Chicago already falls on the next day in AEDT.
What is the time difference between Chicago and AEDT?
AEDT is +16h 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 AEDT in?
AEDT operates on its local timezone.
What are the business hours in Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
Which countries use CST (Central Standard Time)?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.
Does CST observe daylight saving time?
Yes, CST switches to CDT during summer months.
What are some interesting facts about CST?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
Which cities are in the AEDT timezone?
Major cities in the AEDT timezone include Sydney, Melbourne, Canberra, Hobart, Newcastle.
What is the UTC offset for AEDT?
Australian Eastern Daylight Time (AEDT) is at UTC+11:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEDT timezone?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
When is it midnight in Chicago, what time is it in AEDT?
When it is 12:00 AM (midnight) in Chicago (CST), it is +16h later in AEDT (AEDT).
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