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Chicago is -15h behind Sydney
Quick converter
FROM
Sydney
Australia
UTC+10:00
TO
Chicago
United States
UTC-05:00
Date-aware conversion
Result
Thu, Jun 18, 2026 18:36
Sydney: Friday, June 19, 2026 9:36 AM GMT+10 to Chicago: Thursday, June 18, 2026 6:36 PM CDT.
Chicago is 15h behind Sydney on this date
Every hour in Sydney and the corresponding time in Chicago. Green rows indicate business hours in Chicago.
Time zones
Sydney uses Australia/Sydney (GMT+10) and Chicago uses America/Chicago (CDT). The difference can shift during daylight saving changes, so checking the exact date matters.
Best use
Use the green rows to spot normal working hours in Chicago. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
There is no full business-hour overlap in the 24-hour table, so use a custom time or rotate meeting times for fairness. For important calls, check the meeting date because the offset can change when either location enters or leaves daylight saving time.
Compare meeting hoursQuick examples
City context
Sydney is located in Australia (Oceania). It uses the Australia/Sydney timezone with a standard offset of UTC+10:00. It observes DST, switching between AEST and AEDT. See the full Sydney time page for live clock and planning details.
Chicago is located in United States (North America). It uses the America/Chicago timezone with a standard offset of UTC-05:00. It observes DST, switching between CST and CDT. See the full Chicago time page for live clock and planning details.
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Current city times