NST to Chicago
-1h 30mNST
NSTSOURCEChicago
CDTGreen rows indicate typical business hours (9 AM - 5 PM)
NST and CDT on the World Map
The map below highlights the NST (Newfoundland Standard Time) and CDT (Central Standard Time) timezone regions across the globe.
NST – Newfoundland Standard Time
UTC-03:30Newfoundland Standard Time (NST) is a unique half-hour offset time zone in Canada, 3.5 hours behind UTC.
- •NST is one of only a few half-hour offset time zones in the world.
- •Newfoundland joined Canada in 1949 and kept its unique time zone.
- •St. John's is the easternmost city in North America.
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 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.
NST to Chicago Time Difference – Complete Guide
NST runs on Newfoundland Standard Time (NST) at UTC-03:30. Chicago runs on Central Daylight Time (CDT) at UTC-05:00, also currently on daylight saving time. That puts NST 1 hour 30 minutes behind Chicago — a difference of -1h 30m at the current offsets.
In practice, when it is 9:00 AM in NST it is 7:30 AM in Chicago. Midnight in NST is 10:30 PM in Chicago.Chicago observes daylight saving time while NST does not, so the gap narrows or widens by an hour part of the year.
NST to Chicago time conversion table
| NST (NST) | Chicago (CDT) | Day |
|---|---|---|
| 12:00 AM | 10:30 PM | previous day |
| 6:00 AM | 4:30 AM | same day |
| 7:00 AM | 5:30 AM | same day |
| 8:00 AM | 6:30 AM | same day |
| 9:00 AM | 7:30 AM | same day |
| 12:00 PM | 10:30 AM | same day |
| 3:00 PM | 1:30 PM | same day |
| 5:00 PM | 3:30 PM | same day |
| 6:00 PM | 4:30 PM | same day |
| 9:00 PM | 7:30 PM | same day |
Why people convert NST to Chicago time
- Scheduling a call from NST to Chicago: a 10:00 AM start in NST lands at 8:30 AM in Chicago, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both NST and Chicago are inside the 9-to-5 working day between 10:30 AM and 5:00 PM NST time (9:00 AM–3:30 PM CDT). That is roughly 6 hours 30 minutes of usable overlap.
- Coordinating a NST-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 NST" is unambiguous; "3 PM" across a -1h 30m gap is not.
- Block 10:30 AM–5:00 PM NST as the recurring meeting window if you work primarily from NST and need Chicago colleagues present.
- Chicago: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About NST (Newfoundland Standard Time)
Newfoundland Standard Time (NST) is one of the few half-hour offset time zones in the world. It covers the island of Newfoundland in Canada and is 30 minutes ahead of Atlantic Standard Time. This unique offset exists because Newfoundland was an independent country until 1949.
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 NST and Chicago
Both NST and Chicago sit inside the 9 AM – 5 PM working day between 10:30 AM–5:00 PM NST, which is 9:00 AM–3:30 PM CDT. That gives roughly 6 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
NST and Chicago share 6 hours of working-hours overlap (10:30 AM–5:00 PM NST), so scheduling a live meeting is straightforward.
NST is 1 hour 30 minutes behind Chicago (NST UTC-03:30 → CDT UTC-05:00). The shared working window is 10:30 AM–5:00 PM NST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
NST
☀ Currently in DST
Standard: UTC-03:30 · DST: UTC-02:30
Clocks fall back on Sun, Nov 1, 2026
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 NST and Chicago?
NST (NST, UTC-03:30) is 1 hour 30 minutes behind Chicago (CDT, UTC-05:00). The gap is currently -1h 30m.
How do I convert NST time to Chicago time?
Add -1h 30m to NST local time. For example, 9:00 AM in NST is 7:30 AM in Chicago.
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 -1h 30m offset from NST.
What is the best time to call Chicago from NST?
Call between 10:30 AM and 5:00 PM NST — that maps to 9:00 AM–3:30 PM CDT and keeps both parties inside the working day.
Which is behind, NST or Chicago?
NST is 1 hour 30 minutes behind Chicago. When it is 12:00 PM in NST it is 10:30 AM in Chicago.
Do NST and Chicago use different time zones?
NST uses NST at UTC-03:30, while Chicago (USA) uses CDT at UTC-05:00. The IANA identifiers are America/St_Johns and America/Chicago.
Does daylight saving time affect the NST–Chicago difference?
Yes at the moment: Chicago is on daylight saving time and NST is not, so the -1h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share NST's time zone?
NST also covers St. John's, Corner Brook, Mount Pearl.
Which countries use NST, NST's zone?
NST is used in Canada (Newfoundland).
Is there a day difference between NST and Chicago?
Not normally. The -1h 30m gap only pushes the date over the previous day.
What is the time difference between NST and Chicago?
Chicago is -1h 30m from NST.
What timezone is NST in?
NST operates on its local timezone.
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 Chicago?
Standard business hours in Chicago are 8:00 AM - 5:00 PM CST.
Which countries use NST (Newfoundland Standard Time)?
NST is used in Canada (Newfoundland).
Does NST observe daylight saving time?
Yes, NST switches to NDT during summer months.
What are some interesting facts about NST?
NST is one of only a few half-hour offset time zones in the world. Newfoundland joined Canada in 1949 and kept its unique time zone.
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 NST, what time is it in Chicago?
When it is 12:00 AM (midnight) in NST (NST), it is -1h 30m later in Chicago (CST).
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