TIME DIFFERENCE

Chicago Sydney

+15hSydney is 15h ahead of Chicago right now.

Chicago

--:--

Sydney

--:--

Live — updates every second

WORKING-HOUR OVERLAP

Working-hour overlap

–shared 9–5 hours

Find a time with everyone Add a third city →Tracks assume a 9–5 working day in each city.

SIDE BY SIDE

ChicagoSydney

Time zoneCentral Daylight TimeAustralian Eastern Standard Time

IANA identifierAmerica/ChicagoAustralia/Sydney

AbbreviationCDTGMT+10

UTC offsetUTC-5UTC+10

Daylight savingObservedObserved

Current time––

QUESTIONS

How many hours is Sydney ahead of Chicago?

Sydney is 15 hours ahead of Chicago. That's calculated from each city's current UTC offset (UTC-5 for Chicago, UTC+10 for Sydney).

Does the time difference between Chicago and Sydney change during the year?

It can. Chicago and Sydney observe daylight saving time, so the gap shifts by an hour when clocks change. The live clocks above always reflect the current, correct difference.

What's the best time to schedule a meeting between Chicago and Sydney?

There's no window where both Chicago and Sydney are in standard 9-to-5 hours at the same time, so a live call means one side joins early or late. Converge can find the least-bad slot from everyone's real availability.

MORE TIME DIFFERENCES

From Chicago39 cities

New York––Los Angeles––San Francisco––Denver––Toronto––Mexico City––São Paulo––London––Dublin––Paris––Berlin––Madrid––Amsterdam––Rome––Zurich––Stockholm––Moscow––Istanbul––Dubai––Tel Aviv––Riyadh––Johannesburg––Cairo––Lagos––Nairobi––Mumbai––Bangalore––Karachi––Bangkok––Singapore––Hong Kong––Shanghai––Tokyo––Seoul––Jakarta––Manila––Sydney––Perth––Auckland––

From Sydney39 cities

New York––Los Angeles––San Francisco––Chicago––Denver––Toronto––Mexico City––São Paulo––London––Dublin––Paris––Berlin––Madrid––Amsterdam––Rome––Zurich––Stockholm––Moscow––Istanbul––Dubai––Tel Aviv––Riyadh––Johannesburg––Cairo––Lagos––Nairobi––Mumbai––Bangalore––Karachi––Bangkok––Singapore––Hong Kong––Shanghai––Tokyo––Seoul––Jakarta––Manila––Perth––Auckland––

Meeting across Chicago and Sydney?

Skip the timezone math — share one link and Converge finds the time that works for everyone. Free.

Get started free →See all features