CST to NZDT
+19hCST
CSTSOURCENZDT
NZDTGreen rows indicate typical business hours (9 AM - 5 PM)
CST and NZDT on the World Map
The map below highlights the CST (Central Standard Time) and NZDT (New Zealand Daylight 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.
NZDT – New Zealand Daylight Time
UTC+13:00New Zealand Daylight Time (NZDT, UTC+13:00) is New Zealand's summer time zone, one of the earliest offsets in the world.
- •NZDT runs from the last Sunday in September to the first Sunday in April.
- •NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
- •New Zealand changes its clocks two to three weeks before Australia.
- •The Chatham Islands observe UTC+13:45 during their summer time.
CST vs NZDT: Offsets, DST and Best Call Times
CST runs on Central Standard Time (CST) at UTC-06:00. NZDT runs on New Zealand Daylight Time (NZDT) at UTC+13:00. That puts CST 19 hours ahead of NZDT — a difference of +19h at the current offsets.
In practice, when it is 9:00 AM in CST it is 4:00 AM in NZDT on the next day. Midnight in CST is 7:00 PM in NZDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
CST to NZDT time conversion table
| CST (CST) | NZDT (NZDT) | Day |
|---|---|---|
| 12:00 AM | 7:00 PM | same day |
| 6:00 AM | 1:00 AM | next day |
| 7:00 AM | 2:00 AM | next day |
| 8:00 AM | 3:00 AM | next day |
| 9:00 AM | 4:00 AM | next day |
| 12:00 PM | 7:00 AM | next day |
| 3:00 PM | 10:00 AM | next day |
| 5:00 PM | 12:00 PM | next day |
| 6:00 PM | 1:00 PM | next day |
| 9:00 PM | 4:00 PM | next day |
Why people convert CST to NZDT time
- Scheduling a call from CST to NZDT: a 10:00 AM start in CST lands at 5:00 AM in NZDT the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +19h gap: CST and NZDT 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 NZDT is 4:00 AM in CST.
- Keeping family and friends in sync: knowing that 8:00 PM in CST is 3:00 PM in NZDT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM CST" is unambiguous; "3 PM" across a +19h gap is not.
- With a +19h gap there is no shared 9-to-5 window, so alternate the early start: one week CST takes the early slot, the next week NZDT does.
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 NZDT (New Zealand Daylight Time)
New Zealand Daylight Time (NZDT) is the summer time zone for New Zealand, one hour ahead of New Zealand Standard Time (NZST, UTC+12:00). It runs from the last Sunday in September to the first Sunday in April, so New Zealand shifts a week or two earlier in spring than Australia. At UTC+13:00, NZDT is among the earliest offsets in the world — only Samoa, Tonga and parts of Kiribati run further ahead at certain times of year. Auckland and Wellington are 13 hours ahead of UTC during NZDT, 12 hours ahead of Sydney, and 18 hours ahead of New York. The Chatham Islands, 45 minutes further east, move to UTC+13:45.
Best time to call between CST and NZDT
With a +19h offset there is no overlap inside a normal 9 AM – 5 PM day. NZDT opens at 9:00 AM NZDT, which is 4:00 AM in CST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
CST and NZDT have no shared working hours because of the +19h gap. Teams need to alternate early starts or rely on asynchronous handovers.
CST is 19 hours ahead of NZDT (CST UTC-06:00 → NZDT UTC+13:00). 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
CST
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
NZDT
☀ Currently in DST
Standard: UTC+12:00 · DST: UTC+13:00
Clocks fall back on Sat, Apr 3, 2027
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 CST and NZDT?
CST (CST, UTC-06:00) is 19 hours ahead of NZDT (NZDT, UTC+13:00). The gap is currently +19h.
How do I convert CST time to NZDT time?
Add +19h to CST local time. For example, 9:00 AM in CST is 4:00 AM in NZDT (next day).
What time is it in NZDT right now?
NZDT uses NZDT at UTC+13:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +19h offset from CST.
What is the best time to call NZDT from CST?
There is no shared working-hours window because of the +19h gap. The closest option is 1:00 PM in CST, which is 8:00 AM in NZDT.
Which is ahead, CST or NZDT?
CST is 19 hours ahead of NZDT. When it is 12:00 PM in CST it is 7:00 AM in NZDT.
Does daylight saving time affect the CST–NZDT difference?
Neither zone observes daylight saving time, so the +19h offset between CST and NZDT is fixed all year.
Which other cities share CST's time zone?
CST also covers Chicago, Houston, Dallas, San Antonio, Mexico City, Austin, Winnipeg, Memphis and 6 more.
Which countries use CST, CST's zone?
CST 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 CST and NZDT?
Sometimes. The +19h gap is large enough that 8:00 PM or later in CST already falls on the next day in NZDT.
What is the time difference between CST and NZDT?
NZDT is +19h from CST.
What timezone is CST in?
CST operates on its local timezone.
What timezone is NZDT in?
NZDT operates on its local timezone.
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 NZDT timezone?
Major cities in the NZDT timezone include Auckland, Wellington, Christchurch, Hamilton, Dunedin.
What is the UTC offset for NZDT?
New Zealand Daylight Time (NZDT) is at UTC+13:00. During daylight saving time, it shifts to NZDT.
What should I know about the NZDT timezone?
NZDT runs from the last Sunday in September to the first Sunday in April. NZDT is UTC+13:00 — one of the earliest time offsets used anywhere.
When is it midnight in CST, what time is it in NZDT?
When it is 12:00 AM (midnight) in CST (CST), it is +19h later in NZDT (NZDT).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More CST time conversions
- cst to chicago
- cst to cdt
- cst to new york
- cst to london
- cst to dubai
- cst to tokyo
- cst to singapore
- cst to sydney
- cst to los angeles
- cst to paris
- cst to delhi
- cst to mumbai
- cst to berlin
- cst to hong kong
- cst to toronto
- cst to kathmandu
- new york to cst
- london to cst
- dubai to cst
- tokyo to cst
- singapore to cst
- sydney to cst
- los angeles to cst
- paris to cst
- delhi to cst
- mumbai to cst
- berlin to cst
- hong kong to cst
- toronto to cst
- kathmandu to cst
See every conversion from CST →·See every conversion from NZDT →