AEDT to CST Converter & Meeting Planner
Quick answer: 9:00 AM AEDT = 4:00 PM CST (fixed +11:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Australian Eastern Daylight Time (AEDT) and Central Standard Time (CST)? You need to account for the standard time difference. Central Standard Time is normally 17 hours behind Australian Eastern Daylight Time. Whether you are coordinating between teams in Sydney and Melbourne and Chicago and Dallas, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM AEDT = 7:00 AM CST. The full 24-hour AEDT to CST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM AEDT = 10:00 PM CST (-1 day).
| AEDT Time | CST Time |
|---|---|
| 12:00 AM (00:00) | 7:00 AM (07:00)-1 day |
| 1:00 AM (01:00) | 8:00 AM (08:00)-1 day |
| 2:00 AM (02:00) | 9:00 AM (09:00)-1 day |
| 3:00 AM (03:00) | 10:00 AM (10:00)-1 day |
| 4:00 AM (04:00) | 11:00 AM (11:00)-1 day |
| 5:00 AM (05:00) | 12:00 PM (12:00)-1 day |
| 6:00 AM (06:00) | 1:00 PM (13:00)-1 day |
| 7:00 AM (07:00) | 2:00 PM (14:00)-1 day |
| 8:00 AM (08:00) | 3:00 PM (15:00)-1 day |
| 9:00 AM (09:00) | 4:00 PM (16:00)-1 day |
| 10:00 AM (10:00) | 5:00 PM (17:00)-1 day |
| 11:00 AM (11:00) | 6:00 PM (18:00)-1 day |
| 12:00 PM (12:00) | 7:00 PM (19:00)-1 day |
| 1:00 PM (13:00) | 8:00 PM (20:00)-1 day |
| 2:00 PM (14:00) | 9:00 PM (21:00)-1 day |
| 3:00 PM (15:00) | 10:00 PM (22:00)-1 day |
| 4:00 PM (16:00) | 11:00 PM (23:00)-1 day |
| 5:00 PM (17:00) | 12:00 AM (00:00) |
| 6:00 PM (18:00) | 1:00 AM (01:00) |
| 7:00 PM (19:00) | 2:00 AM (02:00) |
| 8:00 PM (20:00) | 3:00 AM (03:00) |
| 9:00 PM (21:00) | 4:00 AM (04:00) |
| 10:00 PM (22:00) | 5:00 AM (05:00) |
| 11:00 PM (23:00) | 6:00 AM (06:00) |
Best time to call Chicago from Sydney
For most work calls, compare the normal business day in Sydney (AEDT) with the business day in Chicago (CST). AEDT commonly covers Oceania, Eastern Australia, while CST is mainly associated with North America, Central America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
⚠️ There is no clean same-day business-hours overlap on 2026-07-05. A practical compromise is around 12:00 AM AEDT, which reaches 9:00 AM CST near the start of their workday.
- DST Safety: AEDT or CST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Australian Securities Exchange (ASX): 10:00-16:00 local time in Sydney.
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Frequently Asked Questions
What is the time difference between AEDT and CST?
During standard time, Central Standard Time is 17 hours behind Australian Eastern Daylight Time.
When does AEDT start and end?
AEDT begins on the first Sunday in October at 02:00 local time, when clocks spring forward one hour from AEST (UTC+10) to AEDT (UTC+11). It ends on the first Sunday in April at 03:00 local time, when clocks fall back to AEST. In 2026, AEDT starts on October 4 and ends on April 5 — following the Southern Hemisphere summer calendar, which runs opposite to DST schedules in Europe and North America.
Is Brisbane on AEDT?
No — Queensland, including Brisbane, does not observe Daylight Saving Time and remains on AEST (UTC+10) year-round. During the AEDT period from October through April, Sydney and Melbourne advance to UTC+11 while Brisbane stays at UTC+10, creating a one-hour gap between cities that share nearly the same longitude and are otherwise in the same time zone for the other six months of the year.
Is CST the same as Central Time (CT)?
Central Time (CT) is the umbrella term for the zone, while CST and CDT refer to its two seasonal offsets. CST (UTC-6) applies during standard time from November through March, and CDT (UTC-5) applies during Daylight Saving Time from March through November.
Does Mexico City use CST?
Mexico City operates on UTC-6, the same offset as CST, but it does not observe Daylight Saving Time following Mexico's elimination of the practice under a 2022 law. This means Mexico City stays at UTC-6 year-round while US and Canadian Central Time cities shift to UTC-5 each summer.