NPT to Chicago
-10h 45mNPT
NPTSOURCEChicago
CDTGreen rows indicate typical business hours (9 AM - 5 PM)
NPT and CDT on the World Map
The map below highlights the NPT (Nepal Time) and CDT (Central Standard Time) timezone regions across the globe.
NPT – Nepal Time
UTC+05:45Nepal Time (NPT, UTC+05:45) is the time zone for Nepal — one of the few offsets in the world set on a 45-minute increment.
- •Nepal Time is UTC+05:45 — a 45-minute offset, not a whole or half hour.
- •The 45-minute offset was adopted in 1986 to match Kathmandu's solar time.
- •Nepal does not observe daylight saving time.
- •Nepal is 15 minutes ahead of India, despite sharing a long open border.
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.
Time Conversion Guide: NPT to Chicago
NPT runs on Nepal Time (NPT) at UTC+05:45. Chicago runs on Central Daylight Time (CDT) at UTC-05:00, also currently on daylight saving time. That puts NPT 10 hours 45 minutes behind Chicago — a difference of -10h 45m at the current offsets.
In practice, when it is 9:00 AM in NPT it is 10:15 PM in Chicago on the previous day. Midnight in NPT is 1:15 PM in Chicago.Chicago observes daylight saving time while NPT does not, so the gap narrows or widens by an hour part of the year.
NPT to Chicago time conversion table
| NPT (NPT) | Chicago (CDT) | Day |
|---|---|---|
| 12:00 AM | 1:15 PM | previous day |
| 6:00 AM | 7:15 PM | previous day |
| 7:00 AM | 8:15 PM | previous day |
| 8:00 AM | 9:15 PM | previous day |
| 9:00 AM | 10:15 PM | previous day |
| 12:00 PM | 1:15 AM | same day |
| 3:00 PM | 4:15 AM | same day |
| 5:00 PM | 6:15 AM | same day |
| 6:00 PM | 7:15 AM | same day |
| 9:00 PM | 10:15 AM | same day |
Why people convert NPT to Chicago time
- Scheduling a call from NPT to Chicago: a 10:00 AM start in NPT lands at 11:15 PM in Chicago the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -10h 45m gap: NPT 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 10:15 PM in NPT.
- Keeping family and friends in sync: knowing that 8:00 PM in NPT is 9:15 AM in Chicago makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM NPT" is unambiguous; "3 PM" across a -10h 45m gap is not.
- With a -10h 45m gap there is no shared 9-to-5 window, so alternate the early start: one week NPT 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 NPT (Nepal Time)
Nepal Time (NPT) runs at UTC+05:45, one of only a handful of time zones worldwide that are not a whole or half hour from UTC. Nepal set its offset to 5 hours 45 minutes ahead of UTC in 1986 to mark the country's position between the 75°E and 90°E meridians; Kathmandu's solar time sits just over 5 hours 41 minutes ahead of Greenwich, so the 45-minute offset tracks the sun more closely than either 5:30 or 6:00 would. Nepal does not observe daylight saving time, so NPT is fixed all year. The offset makes Nepal 15 minutes ahead of India Standard Time (UTC+05:30) and 2 hours 15 minutes ahead of Dubai (UTC+04:00).
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 NPT and Chicago
With a -10h 45m offset there is no overlap inside a normal 9 AM – 5 PM day. Chicago opens at 9:00 AM CDT, which is 10:15 PM in NPT, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
NPT and Chicago have no shared working hours because of the -10h 45m gap. Teams need to alternate early starts or rely on asynchronous handovers.
NPT is 10 hours 45 minutes behind Chicago (NPT UTC+05:45 → 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
NPT
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 NPT and Chicago?
NPT (NPT, UTC+05:45) is 10 hours 45 minutes behind Chicago (CDT, UTC-05:00). The gap is currently -10h 45m.
How do I convert NPT time to Chicago time?
Add -10h 45m to NPT local time. For example, 9:00 AM in NPT is 10:15 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 -10h 45m offset from NPT.
What is the best time to call Chicago from NPT?
There is no shared working-hours window because of the -10h 45m gap. The closest option is 1:00 PM in NPT, which is 2:15 AM in Chicago.
Which is behind, NPT or Chicago?
NPT is 10 hours 45 minutes behind Chicago. When it is 12:00 PM in NPT it is 1:15 AM in Chicago.
Do NPT and Chicago use different time zones?
NPT uses NPT at UTC+05:45, while Chicago (USA) uses CDT at UTC-05:00. The IANA identifiers are Asia/Kathmandu and America/Chicago.
Does daylight saving time affect the NPT–Chicago difference?
Yes at the moment: Chicago is on daylight saving time and NPT is not, so the -10h 45m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share NPT's time zone?
NPT also covers Kathmandu, Pokhara, Lalitpur, Bharatpur, Biratnagar.
Which countries use NPT, NPT's zone?
NPT is used in Nepal.
Is there a day difference between NPT and Chicago?
Not normally. The -10h 45m gap only pushes the date over the previous day.
What is the time difference between NPT and Chicago?
Chicago is -10h 45m from NPT.
What timezone is NPT in?
NPT 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 NPT (Nepal Time)?
NPT is used in Nepal.
Does NPT observe daylight saving time?
No, NPT does not observe daylight saving time and remains at UTC+05:45 year-round.
What are some interesting facts about NPT?
Nepal Time is UTC+05:45 — a 45-minute offset, not a whole or half hour. The 45-minute offset was adopted in 1986 to match Kathmandu's solar time.
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 NPT, what time is it in Chicago?
When it is 12:00 AM (midnight) in NPT (NPT), it is -10h 45m later in Chicago (CST).
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