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Sydney to Chicago Time

AEST to CST Converter — 9 AM AEST is 5:00 PM CST

Sydney is 16 hours ahead of Chicago. Convert any time between Sydney (AEST/AEDT) and Chicago (CST/CDT) instantly.

Sydney

Australia

AEST/AEDT
UTC+10 · AEST/AEDT

Chicago

United States

CST/CDT
UTC-6 · CST/CDT
Sydney is 16 hours ahead of Chicago.

Add Time Zones to Compare

Sydney(UTC+10)
Chicago(UTC-6)

Time Zone Comparison

Sydney
11:00 PM
Australia · AEST/AEDT
12:00 PM
12amNight
1amNight
2amNight
3amNight
4amNight
5amNight
6amNight
7amNight
8amNight
9amWorking hours
10amWorking hours
11amWorking hours
12pmWorking hours
1pmWorking hours
2pmWorking hours
3pmWorking hours
4pmWorking hours
5pmEvening
6pmEvening
7pmEvening
8pmEvening
9pmNight
10pmNight
11pmNight
Chicago
6:00 AM
United States · CST/CDT· Dec 31
7:00 PM
7amNight
8amNight
9amWorking hours
10amWorking hours
11amWorking hours
12pmWorking hours
1pmWorking hours
2pmWorking hours
3pmWorking hours
4pmWorking hours
5pmEvening
6pmEvening
7pmEvening
8pmEvening
9pmNight
10pmNight
11pmNight
12amNight
1amNight
2amNight
3amNight
4amNight
5amNight
6amNight
Working
Evening
Night
Now
Selected Time
Minutes:
Sydney12:00 PM
Chicago7:00 PM

Sydney to Chicago Time Conversion Table

Sydney (AEST)Chicago (CST)
1:00 AM9:00 AM
2:00 AM11:00 AM
4:00 AM1:00 PM
6:00 AM3:00 PM
8:00 AM5:00 PM
10:00 AM7:00 PM
12:00 PM9:00 PM
2:00 PM11:00 PM
4:00 PM1:00 AM
6:00 PM3:00 AM
8:00 PM5:00 AM
10:00 PM7:00 AM
Working hours (9 AM - 5 PM)
Evening (5 PM - 9 PM)
Night

Sydney & Chicago — Business & Scheduling Guide

Sydney (Australia) is a stable, resource-rich economy in the Asia-Pacific region, with key industries in mining, agriculture, finance, and tourism. Chicago (United States) is a global financial and tech hub, known for technology, finance, healthcare, and entertainment. With a 16-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.

Scheduling Meetings Between Sydney and Chicago

With Chicago 16 hours behind Sydney, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. Australian work culture values work-life balance, with typical hours of 9 AM–5 PM and flexible arrangements common. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.

Daylight Saving Time Considerations

Both Sydney and Chicago observe Daylight Saving Time. Sydney uses AEST/AEDT (switching between standard and daylight time), while Chicago uses CST/CDT. If their DST transitions happen on different dates — which is common, as the US, EU, and other regions change clocks on different weekends — the effective time difference between the two cities can shift by 1 hour for several weeks. Always double-check the actual offset during March–April and October–November.

AEST to CST — Quick Reference

AEST (AEST/AEDT) stands for the timezone used in Sydney, Australia (UTC+10). CST (CST/CDT) is the timezone used in Chicago, United States (UTC-6). Sydney is 16 hours ahead of Chicago.

To convert AEST to CST, subtract 16 hours from AEST time. For example, AEST 9:00 AM = CST 5:00 PM (previous day).

Key Facts

  • Time difference: Sydney (UTC+10) is 16 hours ahead of Chicago (UTC-6).
  • Daylight Saving Time: Sydney observes DST (AEST/AEDT). Chicago observes DST (CST/CDT).
  • Regions: Sydney is located in Australia and uses the AEST/AEDT time zone. Chicago is located in United States and uses the CST/CDT time zone.
  • Best time to call: There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.

Frequently Asked Questions

What is the time difference between Sydney and Chicago?

Sydney is 16 hours ahead of Chicago.

What time is it in Chicago when it's 9 AM in Sydney?

When it's 9:00 AM in Sydney, it is 5:00 PM in Chicago (previous day).

What time is 9 PM AEST in CST?

9 PM AEST (Sydney time) is 5:00 AM CST (Chicago time). This is a common time people check when scheduling evening calls across these two time zones.

When is the best time to schedule a meeting between Sydney and Chicago?

There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.

How do I convert AEST to CST?

AEST (AEST/AEDT) is the timezone for Sydney, Australia (UTC+10). CST (CST/CDT) is the timezone for Chicago, United States (UTC-6). Sydney is 16 hours ahead of Chicago. Quick examples: 9 AM AEST = 5:00 PM CST, 12 PM AEST = 8:00 PM CST, 3 PM AEST = 11:00 PM CST, 6 PM AEST = 2:00 AM CST.

Is Sydney ahead of or behind Chicago?

Sydney is 16 hours ahead of Chicago. When it's noon in Sydney, it's 8:00 PM in Chicago (previous day).

Does Sydney or Chicago change clocks for Daylight Saving Time?

Yes, Sydney observes DST and switches between AEST/AEDT. Chicago observes DST and switches between CST/CDT.

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