AEDT to CST
-17hAEDT
AEDTSOURCECST
CSTGreen rows indicate typical business hours (9 AM - 5 PM)
AEDT and CST on the World Map
The map below highlights the AEDT (Australian Eastern Daylight Time) and CST (Central Standard Time) timezone regions across the globe.
AEDT – Australian Eastern Daylight Time
UTC+11:00Australian Eastern Daylight Time (AEDT, UTC+11:00) is the daylight saving period in south-eastern Australia, from October to April.
- •AEDT runs from the first Sunday in October to the first Sunday in April.
- •AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
- •Queensland does not observe daylight saving, so Brisbane stays on AEST.
- •During AEDT, Sydney is 16 hours ahead of New York and 11 hours ahead of UTC.
CST – Central Standard Time
UTC-06:00Central Standard Time (CST) is the time zone for the central United States, Canada, and Mexico, 6 hours behind UTC.
- •CST covers 20 US states fully or partially.
- •Chicago and Houston are the two largest cities in the Central Time Zone.
- •Mexico City, one of the world's most populous cities, operates on CST.
- •CST is 1 hour behind EST and 2 hours ahead of PST.
Understanding the -17h Gap: AEDT vs CST
AEDT runs on Australian Eastern Daylight Time (AEDT) at UTC+11:00. CST runs on Central Standard Time (CST) at UTC-06:00. That puts AEDT 17 hours behind CST — a difference of -17h at the current offsets.
In practice, when it is 9:00 AM in AEDT it is 4:00 PM in CST on the previous day. Midnight in AEDT is 7:00 AM in CST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
AEDT to CST time conversion table
| AEDT (AEDT) | CST (CST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | previous day |
| 6:00 AM | 1:00 PM | previous day |
| 7:00 AM | 2:00 PM | previous day |
| 8:00 AM | 3:00 PM | previous day |
| 9:00 AM | 4:00 PM | previous day |
| 12:00 PM | 7:00 PM | previous day |
| 3:00 PM | 10:00 PM | previous day |
| 5:00 PM | 12:00 AM | same day |
| 6:00 PM | 1:00 AM | same day |
| 9:00 PM | 4:00 AM | same day |
Why people convert AEDT to CST time
- Scheduling a call from AEDT to CST: a 10:00 AM start in AEDT lands at 5:00 PM in CST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -17h gap: AEDT and CST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in CST is 4:00 PM in AEDT.
- Booking travel or deliveries: tracking CST local time against AEDT keeps pickup windows and arrival estimates honest across the -17h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEDT" is unambiguous; "3 PM" across a -17h gap is not.
- With a -17h gap there is no shared 9-to-5 window, so alternate the early start: one week AEDT takes the early slot, the next week CST does.
About AEDT (Australian Eastern Daylight Time)
Australian Eastern Daylight Time (AEDT) is the daylight saving period in south-eastern Australia, one hour ahead of Australian Eastern Standard Time (AEST, UTC+10:00). Because Australia is in the southern hemisphere, AEDT runs through the summer — from the first Sunday in October to the first Sunday in April — which is almost exactly the reverse of the European and North American schedules. New South Wales, Victoria, Tasmania and the Australian Capital Territory observe it; Queensland and the Northern Territory do not, so Brisbane stays on AEST year round while Sydney moves to AEDT. During AEDT, Sydney is 11 hours ahead of UTC and 16 hours ahead of New York.
About CST (Central Standard Time)
Central Standard Time (CST) covers the central region of North America. It is the second most populous time zone in the US, including major cities like Chicago, Houston, and Dallas. CST is also used in Mexico City and much of Central America including Guatemala, Honduras, El Salvador, and Costa Rica. During summer, most of the US and Canada switch to Central Daylight Time (CDT, UTC-05:00), while Mexico and Central American countries generally remain on CST.
Best time to call between AEDT and CST
With a -17h offset there is no overlap inside a normal 9 AM – 5 PM day. CST opens at 9:00 AM CST, which is 4:00 PM in AEDT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
AEDT and CST have no shared working hours because of the -17h gap. Teams need to alternate early starts or rely on asynchronous handovers.
AEDT is 17 hours behind CST (AEDT UTC+11:00 → CST UTC-06:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
AEDT
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
CST
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
⚠ These locations are currently in different DST states, so the time difference may change when clocks adjust.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between AEDT and CST?
AEDT (AEDT, UTC+11:00) is 17 hours behind CST (CST, UTC-06:00). The gap is currently -17h.
How do I convert AEDT time to CST time?
Add -17h to AEDT local time. For example, 9:00 AM in AEDT is 4:00 PM in CST (previous day).
What time is it in CST right now?
CST uses CST at UTC-06:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -17h offset from AEDT.
What is the best time to call CST from AEDT?
There is no shared working-hours window because of the -17h gap. The closest option is 1:00 PM in AEDT, which is 8:00 PM in CST.
Which is behind, AEDT or CST?
AEDT is 17 hours behind CST. When it is 12:00 PM in AEDT it is 7:00 PM in CST.
Does daylight saving time affect the AEDT–CST difference?
Neither zone observes daylight saving time, so the -17h offset between AEDT and CST is fixed all year.
Which other cities share AEDT's time zone?
AEDT also covers Sydney, Melbourne, Canberra, Hobart, Newcastle.
Which countries use AEDT, AEDT's zone?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Is there a day difference between AEDT and CST?
Sometimes. The -17h gap is large enough that 8:00 PM or later in AEDT already falls on the in CST.
What is the time difference between AEDT and CST?
CST is -17h from AEDT.
What timezone is AEDT in?
AEDT operates on its local timezone.
What timezone is CST in?
CST operates on its local timezone.
Which countries use AEDT (Australian Eastern Daylight Time)?
AEDT is used in Australia (NSW, Victoria, Tasmania, ACT).
Does AEDT observe daylight saving time?
Yes, AEDT switches to AEDT during summer months.
What are some interesting facts about AEDT?
AEDT runs from the first Sunday in October to the first Sunday in April. AEDT is one hour ahead of Australian Eastern Standard Time (AEST).
Which cities are in the CST timezone?
Major cities in the CST timezone include Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis.
What is the UTC offset for CST?
Central Standard Time (CST) is at UTC-06:00. During daylight saving time, it shifts to CDT.
What should I know about the CST timezone?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
When is it midnight in AEDT, what time is it in CST?
When it is 12:00 AM (midnight) in AEDT (AEDT), it is -17h later in CST (CST).
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See every conversion from AEDT →·See every conversion from CST →