Perth to Chicago
-13hPerth
AWSTSOURCEChicago
CDTGreen rows indicate typical business hours (9 AM - 5 PM)
AWST and CDT on the World Map
The map below highlights the AWST (Australian Western Standard Time) and CDT (Central Standard Time) timezone regions across the globe.
AWST – Australian Western Standard Time
UTC+08:00Australian Western Standard Time (AWST) is the time zone for Western Australia, 8 hours ahead of UTC.
- •Western Australia does not observe daylight saving time.
- •Perth is the most isolated major city in the world.
- •AWST is the same offset as China Standard Time and Singapore Time.
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.
About Perth
WikipediaPerth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.
Western Australia does not observe daylight saving time.
About Chicago
WikipediaChicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
The Chicago Board of Trade is the world's oldest futures and options exchange.
Everything You Need to Know About Perth and Chicago Time
Perth runs on Australian Western Standard Time (AWST) at UTC+08:00. Chicago runs on Central Daylight Time (CDT) at UTC-05:00, also currently on daylight saving time. That puts Perth 13 hours behind Chicago — a difference of -13h at the current offsets.
In practice, when it is 9:00 AM in Perth it is 8:00 PM in Chicago on the previous day. Midnight in Perth is 11:00 AM in Chicago.Chicago observes daylight saving time while Perth does not, so the gap narrows or widens by an hour part of the year.
Perth to Chicago time conversion table
| Perth (AWST) | Chicago (CDT) | Day |
|---|---|---|
| 12:00 AM | 11:00 AM | previous day |
| 6:00 AM | 5:00 PM | previous day |
| 7:00 AM | 6:00 PM | previous day |
| 8:00 AM | 7:00 PM | previous day |
| 9:00 AM | 8:00 PM | previous day |
| 12:00 PM | 11:00 PM | previous day |
| 3:00 PM | 2:00 AM | same day |
| 5:00 PM | 4:00 AM | same day |
| 6:00 PM | 5:00 AM | same day |
| 9:00 PM | 8:00 AM | same day |
Why people convert Perth to Chicago time
- Scheduling a call from Perth to Chicago: a 10:00 AM start in Perth lands at 9:00 PM in Chicago the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -13h gap: Perth and Chicago 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 Chicago is 8:00 PM in Perth.
- Coordinating a Perth-based team with Chicago contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM AWST" is unambiguous; "3 PM" across a -13h gap is not.
- With a -13h gap there is no shared 9-to-5 window, so alternate the early start: one week Perth takes the early slot, the next week Chicago does.
- Chicago: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About AWST (Australian Western Standard Time)
Australian Western Standard Time (AWST) is used in Western Australia. WA does not observe daylight saving time, having rejected it in multiple referendums. Perth is the most remote major city in the world.
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 Perth and Chicago
With a -13h offset there is no overlap inside a normal 9 AM – 5 PM day. Chicago opens at 9:00 AM CDT, which is 8:00 PM in Perth, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Perth and Chicago have no shared working hours because of the -13h gap. Teams need to alternate early starts or rely on asynchronous handovers.
Perth is 13 hours behind Chicago (AWST UTC+08:00 → CDT UTC-05:00). 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
Perth
Does not observe DST
Chicago
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
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 Perth and Chicago?
Perth (AWST, UTC+08:00) is 13 hours behind Chicago (CDT, UTC-05:00). The gap is currently -13h.
How do I convert Perth time to Chicago time?
Add -13h to Perth local time. For example, 9:00 AM in Perth is 8:00 PM in Chicago (previous day).
What time is it in Chicago right now?
Chicago uses CDT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -13h offset from Perth.
What is the best time to call Chicago from Perth?
There is no shared working-hours window because of the -13h gap. The closest option is 1:00 PM in Perth, which is 12:00 AM in Chicago.
Which is behind, Perth or Chicago?
Perth is 13 hours behind Chicago. When it is 12:00 PM in Perth it is 11:00 PM in Chicago.
Do Perth and Chicago use different time zones?
Perth (Australia) uses AWST at UTC+08:00, while Chicago (USA) uses CDT at UTC-05:00. The IANA identifiers are Australia/Perth and America/Chicago.
Does daylight saving time affect the Perth–Chicago difference?
Yes at the moment: Chicago is on daylight saving time and Perth is not, so the -13h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Perth's time zone?
AWST also covers Perth, Mandurah, Bunbury, Geraldton.
Which countries use AWST, Perth's zone?
AWST is used in Australia (Western Australia).
Is there a day difference between Perth and Chicago?
Sometimes. The -13h gap is large enough that 8:00 PM or later in Perth already falls on the in Chicago.
What is the time difference between Perth and Chicago?
Chicago is -13h from Perth.
What timezone is Perth in?
Perth operates on Australian Western Time (AWST), UTC+8 with no daylight saving. As Australia's mining capital, Perth coordinates with Asian markets.
What timezone is Chicago in?
Chicago operates on Central Time (CST/CDT), 1 hour behind New York. Home to CME and CBOE, Chicago is a global center for derivatives trading.
What are the business hours in Perth?
Standard business hours in Perth are 9:00 AM - 5:00 PM AWST.
What are the business hours in Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
What is the best time to schedule a call between Perth and Chicago?
The best overlap for a call is when both cities are in business hours. Perth works 9:00 AM - 5:00 PM AWST and Chicago works 8:00 AM - 5:00 PM CST (-13h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Perth and Chicago?
Perth uses AUD (A$) while Chicago uses USD ($). Check current exchange rates when planning travel or business between these cities.
How do Perth and Chicago compare in size?
Perth has a population of approximately 2.1 million (metro: 2.2 million), while Chicago has approximately 2.7 million (metro: 9.5 million).
What are the major landmarks in Perth and Chicago?
Perth is known for Kings Park, Perth Mint, Elizabeth Quay. Chicago is famous for Willis Tower, Millennium Park, Cloud Gate (The Bean).
Do Perth and Chicago have stock exchanges?
Yes. Perth has the ASX (via Sydney) and Chicago has the CME (Chicago Mercantile Exchange), CBOE. The -13h time difference affects trading hour overlaps between these exchanges.
Which countries use AWST (Australian Western Standard Time)?
AWST is used in Australia (Western Australia).
Does AWST observe daylight saving time?
No, AWST does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about AWST?
Western Australia does not observe daylight saving time. Perth is the most isolated major city in the world.
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 Perth, what time is it in Chicago?
When it is 12:00 AM (midnight) in Perth (AWST), it is -13h later in Chicago (CST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More Perth time conversions
- perth to sydney
- perth to melbourne
- perth to awst
- perth to new york
- perth to london
- perth to dubai
- perth to tokyo
- perth to singapore
- perth to los angeles
- perth to paris
- perth to delhi
- perth to mumbai
- perth to berlin
- perth to hong kong
- perth to toronto
- perth to kathmandu
- new york to perth
- london to perth
- dubai to perth
- tokyo to perth
- singapore to perth
- sydney to perth
- los angeles to perth
- paris to perth
- delhi to perth
- mumbai to perth
- berlin to perth
- hong kong to perth
- toronto to perth
- kathmandu to perth
See every conversion from Perth →·See every conversion from Chicago →