Chicago to Vienna
+7hChicago
CDTSOURCEVienna
CESTGreen rows indicate typical business hours (9 AM - 5 PM)
CDT and CEST on the World Map
The map below highlights the CDT (Central Standard Time) and CEST (Central European Time) timezone regions across the globe.
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.
CET – Central European Time
UTC+01:00Central European Time (CET) is used across most of Western and Central Europe, 1 hour ahead of UTC.
- •CET covers more European countries than any other time zone.
- •Spain uses CET despite being geographically aligned with GMT/WET.
- •The Frankfurt Stock Exchange, Euronext (Amsterdam/Paris), and Borsa Italiana operate on CET.
- •Over 500 million people live in the CET time zone.
- •France moved to CET during the German occupation in WWII and never switched back.
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.
About Vienna
WikipediaVienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.
Vienna has more than 50 theaters and opera houses.
Everything You Need to Know About Chicago and Vienna Time
Chicago runs on Central Daylight Time (CDT) at UTC-05:00, currently observing daylight saving time. Vienna runs on Central European Summer Time (CEST) at UTC+02:00, also currently on daylight saving time. That puts Chicago 7 hours ahead of Vienna — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in Chicago it is 4:00 PM in Vienna. Midnight in Chicago is 7:00 AM in Vienna. Because both zones shift for daylight saving, the gap between them only changes during the few weeks each year when their transition dates differ.
Chicago to Vienna time conversion table
| Chicago (CDT) | Vienna (CEST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert Chicago to Vienna time
- Scheduling a call from Chicago to Vienna: a 10:00 AM start in Chicago lands at 5:00 PM in Vienna, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Chicago and Vienna are inside the 9-to-5 working day between 9:00 AM and 10:00 AM CDT time (4:00 PM–5:00 PM CEST). That is roughly 1 hours of usable overlap.
- Watching a live event or market open: Chicago viewers need 4:00 PM in Vienna to catch a 9:00 AM start there, and 5:00 PM if the event is anchored to Chicago.
- Always state the zone abbreviation, not just the hour. "3:00 PM CDT" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM CDT as the recurring meeting window if you work primarily from Chicago and need Vienna colleagues present.
- Chicago: Clocks fall back on Sun, Nov 1, 2026. Re-check this page after that date because the offset changes and so does the +7h gap.
- Vienna: Clocks fall back on Sun, Oct 25, 2026. Any meeting series spanning that date will shift by an hour in local time.
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.
About CET (Central European Time)
Central European Time (CET) is the standard time zone for most of Europe, covering over 30 countries from Spain to Poland, and from Norway to Italy. CET is 1 hour ahead of GMT and is used by the European Union's most populous nations. During summer, most CET countries switch to Central European Summer Time (CEST, UTC+02:00). Major European financial markets in Frankfurt, Paris, and Amsterdam operate on CET.
Best time to call between Chicago and Vienna
Both Chicago and Vienna sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM CDT, which is 4:00 PM–5:00 PM CEST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Chicago and Vienna overlap for only 60 minutes (9:00 AM–10:00 AM CDT), so meetings have to be booked precisely.
Chicago is 7 hours ahead of Vienna (CDT UTC-05:00 → CEST UTC+02:00). The shared working window is 9:00 AM–10:00 AM CDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Chicago
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
Vienna
☀ Currently in DST
Standard: UTC+01:00 · DST: UTC+02:00
Clocks fall back on Sun, Oct 25, 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 Chicago and Vienna?
Chicago (CDT, UTC-05:00) is 7 hours ahead of Vienna (CEST, UTC+02:00). The gap is currently +7h.
How do I convert Chicago time to Vienna time?
Add +7h to Chicago local time. For example, 9:00 AM in Chicago is 4:00 PM in Vienna.
What time is it in Vienna right now?
Vienna uses CEST at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from Chicago.
What is the best time to call Vienna from Chicago?
Call between 9:00 AM and 10:00 AM CDT — that maps to 4:00 PM–5:00 PM CEST and keeps both parties inside the working day.
Which is ahead, Chicago or Vienna?
Chicago is 7 hours ahead of Vienna. When it is 12:00 PM in Chicago it is 7:00 PM in Vienna.
Do Chicago and Vienna use different time zones?
Chicago (USA) uses CDT at UTC-05:00, while Vienna (Austria) uses CEST at UTC+02:00. The IANA identifiers are America/Chicago and Europe/Vienna.
Does daylight saving time affect the Chicago–Vienna difference?
Both zones observe DST, so the difference stays at +7h for most of the year and only changes during the weeks when their transition dates do not line up.
Which other cities share Chicago's time zone?
CDT also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CDT, Chicago's zone?
CDT is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, Costa Rica, Nicaragua and 1 more.
Is there a day difference between Chicago and Vienna?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between Chicago and Vienna?
Vienna is +7h from Chicago.
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 timezone is Vienna in?
Vienna operates on Central European Time (CET/CEST). As a major EU hub and headquarters for international organizations, Vienna coordinates Central European business.
What are the business hours in Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
What are the business hours in Vienna?
Standard business hours in Vienna are 8:00 AM - 5:00 PM CET.
What is the best time to schedule a call between Chicago and Vienna?
The best overlap for a call is when both cities are in business hours. Chicago works 8:00 AM - 5:00 PM CST and Vienna works 8:00 AM - 5:00 PM CET (+7h difference). Try scheduling during the overlapping window for maximum convenience.
What currencies are used in Chicago and Vienna?
Chicago uses USD ($) while Vienna uses EUR (€). Check current exchange rates when planning travel or business between these cities.
How do Chicago and Vienna compare in size?
Chicago has a population of approximately 2.7 million (metro: 9.5 million), while Vienna has approximately 1.9 million (metro: 2.9 million).
What are the major landmarks in Chicago and Vienna?
Chicago is known for Willis Tower, Millennium Park, Cloud Gate (The Bean). Vienna is famous for Schönbrunn Palace, St. Stephen's Cathedral, Belvedere Palace.
Do Chicago and Vienna have stock exchanges?
Yes. Chicago has the CME (Chicago Mercantile Exchange), CBOE and Vienna has the Wiener Börse. The +7h time difference affects trading hour overlaps between these exchanges.
Which countries use CST (Central Standard Time)?
CST is used in United States (Central), Canada (Manitoba, Saskatchewan), Mexico, Guatemala, Honduras, El Salvador, and 3 more countries.
Does CST observe daylight saving time?
Yes, CST switches to CDT during summer months.
What are some interesting facts about CST?
CST covers 20 US states fully or partially. Chicago and Houston are the two largest cities in the Central Time Zone.
Which cities are in the CET timezone?
Major cities in the CET timezone include Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw.
What is the UTC offset for CET?
Central European Time (CET) is at UTC+01:00. During daylight saving time, it shifts to CEST.
What should I know about the CET timezone?
CET covers more European countries than any other time zone. Spain uses CET despite being geographically aligned with GMT/WET.
When is it midnight in Chicago, what time is it in Vienna?
When it is 12:00 AM (midnight) in Chicago (CST), it is +7h later in Vienna (CET).
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