AEST to CST converter: Sydney time to Central time

In 2026 Chicago is 17 hours behind Sydney until 8 March, 16 hours behind from 8 March to 5 April, 15 hours behind from 5 April to 4 October, 16 hours behind from 4 October to 1 November and 17 hours behind for the rest of the year, as Australia and the US change their clocks on different dates.

Sydney12:00 PMSunday 11 Oct · AEDT

Chicago8:00 PMSaturday 10 Oct · CDT

Chicago is 16 h behind Sydney today.

Sydney

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Chicago

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9 to 6 working hoursboth at workOverlap: 9 AM–10 AM in Sydney

Your result

Enter your values to see the result.

Daylight saving: local time and fixed AEST and CST

The converter starts with Sydney to Chicago, using local clock rules. For the standard-time offsets all year, use the fixed AEST and CST button.

These examples use noon on the dates shown. A converted date can be the previous or following day.

Starting date and time	Using local city rules	Using fixed AEST and CST
2026-01-15 12:00	2026-01-14 19:00 (UTC-06:00)	2026-01-14 20:00
2026-07-15 12:00	2026-07-14 21:00 (UTC-05:00)	2026-07-14 20:00

12:00 PM Wednesday 15 Jul in Sydney is 9:00 PM Tuesday 14 Jul in Chicago (CDT, 15 h behind).

Why daylight saving conversions need a date explains skipped and repeated clock readings. The rules here come from the browser’s time zone data and can lag a government change.