Time Difference Between Chicago and Sydney

How far apart are Chicago and Sydney?

Sydney (Australia) runs 15 hours ahead of Chicago (United States). In practical terms, the working day in Sydney starts while Chicago is still in the early hours or asleep, which is what makes scheduling between the two take a little planning.

Best time to schedule a call or meeting

Standard working hours in Chicago and Sydney barely overlap, so a live call usually means one side joining early in the morning or late in the evening. The least disruptive option is to catch the very start or end of one city’s working day, or to handle things asynchronously.

A note on daylight saving

The difference shown here reflects the current offset between Chicago and Sydney. Because regions switch to and from daylight saving on different dates — and some do not observe it at all — the gap can move by an hour for a few weeks each spring and autumn. If you are booking something months ahead, it is worth re-checking close to the date.