What is the time difference between Chicago and Sydney?

On 31 July 2026 the gap is 15 hours, with Sydney ahead of Chicago. Across the year it moves between 15 hours and 17 hours because of daylight saving.

Do Chicago and Sydney have overlapping working hours?

No. With standard 9:00–17:00 hours on both sides there is no shared window, so one person has to take the call outside their normal day. The ranking on this page picks the option that costs the least and spreads it as evenly as possible.

Can I add more people or change the working hours?

Yes. The planner on this page starts with Chicago and Sydney on 9:00–17:00, and you can change either city's hours, pick a different date, or add up to eight participants. Nothing is sent to a server.

Best time to meet between Chicago and Sydney

Sydney is 15 hours ahead of Chicago on 31 July 2026. Their standard working days do not overlap at all.

Chicago: UTC-5; America/Chicago
Sydney: UTC+10; Australia/Sydney
Shared working hours: None; at 9:00–17:00 each

Participants

Meeting date

City / timezone

Available from

Available to

City / timezone

Available from

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Best meeting slots

No time works for everyone on this day — the slots below are the fairest tradeoffs. Try another date or widening someone's hours.

Local timelines — Fri, Jul 31

Each row is one person's 24h day, aligned to the same instants. Times are labelled in each person's own timezone.

Chicago

12am6am12pm6pm

Sydney

6pm12am6am12pm

NightDawnMorningMiddayEveningLateEveryone freeOff-hours

Best meeting times

Ranked for Friday, 31 July 2026, assuming each person is available 9:00–17:00 in their own local time. Change the date or the hours in the planner above and the ranking updates live.

There is no window where every person is inside their working hours. Someone has to move. The slots below are ranked by how small and how evenly shared that compromise is.

#	Chicago	Sydney	Tradeoff	Fairness
1	5:30 PM Fri	8:30 AM Sat	Evening for Chicago, early morning for Sydney	Shared discomfort
2	5:00 PM Fri	8:00 AM Sat	Evening for Chicago, early morning for Sydney	Shared discomfort
3	6:00 PM Fri	9:00 AM Sat	Evening for Chicago, in hours for Sydney	Shared discomfort
4	4:30 PM Fri	7:30 AM Sat	In hours for Chicago, early morning for Sydney	Shared discomfort
5	6:30 PM Fri	9:30 AM Sat	Evening for Chicago, in hours for Sydney	Shared discomfort

The full day, side by side

Each row is one person's Friday, in their own local time. Aligned vertically, so any column is the same moment everywhere.

Chicago · United States America/Chicago

12 AM6 AM12 PM6 PM11 PM

Sydney · Australia Australia/Sydney

3 PM9 PM3 AM9 AM2 PM

Solid blocks are working hours; faded blocks are outside them. Colours follow the local time of day.

Daylight saving between Chicago and Sydney

The gap is not fixed: it moves between 15 hours and 17 hours across the year, because the two cities switch to daylight saving on different dates. A time that worked in March can be an hour off in April — the planner uses each city's IANA rules for the exact date you pick, so it stays correct through the switch.

Questions about Chicago ↔ Sydney meetings

What is the time difference between Chicago and Sydney?: On 31 July 2026 the gap is 15 hours, with Sydney ahead of Chicago. Across the year it moves between 15 hours and 17 hours because of daylight saving.
Do Chicago and Sydney have overlapping working hours?: No. With standard 9:00–17:00 hours on both sides there is no shared window, so one person has to take the call outside their normal day. The ranking on this page picks the option that costs the least and spreads it as evenly as possible.
Does this account for daylight saving?: The gap is not fixed: it moves between 15 hours and 17 hours across the year, because the two cities switch to daylight saving on different dates. A time that worked in March can be an hour off in April — the planner uses each city's IANA rules for the exact date you pick, so it stays correct through the switch.
Can I add more people or change the working hours?: Yes. The planner on this page starts with Chicago and Sydney on 9:00–17:00, and you can change either city's hours, pick a different date, or add up to eight participants. Nothing is sent to a server.

Or browse every city on the city index, or read the scheduling guides.