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NZST/NZDT
New Zealand Standard Time
GMT +12
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NZDT is not used on September 25, 2026

This converter uses NZST for New Zealand.

CT/CDT
Central Time
GMT -5
yesterday
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CT is not used on this date
This converter uses CDT (GMT -5), the offset Chicago uses on this date. Open the CDT converter.

Quick answers

Selected conversion

The selected date and time will appear here when the converter loads.

How the time difference changes

Depending on seasonal clock changes, NZST is 17 hours ahead of CT, NZDT is 18 hours ahead of CT, or NZDT is 19 hours ahead of CT.

Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in NZST correspond to 4:00 pm (previous day) to 12:00 am in CT, working hours of 9:00 am to 5:00 pm in NZDT correspond to 3:00 pm (previous day) to 11:00 pm (previous day) in CT, or working hours of 9:00 am to 5:00 pm in NZDT correspond to 2:00 pm (previous day) to 10:00 pm (previous day) in CT.

Compare NZDT time with CT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

New Zealand Standard Time is 17 hours ahead of Central Daylight Time
4:00 pm16:00 in NZST is 11:00 pm23:00 in CDT

NZST to CDT call time
Best time for a conference call or a meeting is between 9am-10am in NZST which corresponds to 4pm-5pm in CDT (previous day)

4:00 pm16:00 New Zealand Standard Time (NZST). Offset UTC +12:00 hours
11:00 pm23:00 Central Daylight Time (CDT). Offset UTC -5:00 hours

4:00 pm16:00 NZST / 11:00 pm23:00 CDT

NZSTCT
12am (midnight)7am
1am8am
2am9am
3am10am
4am11am
5am12pm (noon)
6am1pm
7am2pm
8am3pm
9am4pm
10am5pm
11am6pm
12pm (noon)7pm
1pm8pm
2pm9pm
3pm10pm
4pm11pm
5pm12am (midnight)
6pm1am
7pm2am
8pm3am
9pm4am
10pm5am
11pm6am
00:0007:00
01:0008:00
02:0009:00
03:0010:00
04:0011:00
05:0012:00
06:0013:00
07:0014:00
08:0015:00
09:0016:00
10:0017:00
11:0018:00
12:0019:00
13:0020:00
14:0021:00
15:0022:00
16:0023:00
17:0000:00
18:0001:00
19:0002:00
20:0003:00
21:0004:00
22:0005:00
23:0006:00

New Zealand Daylight Time

Offset: NZDT is 13 hours ahead Greenwich Mean Time (GMT) and is used in Pacific

Countries using this time zone: Antarctica, New Zealand

Principal Cities: The largest city in the NZDT time zone is Auckland in New Zealand, with about 1.547 million people. Other major cities in this time zone include Christchurch, Wellington, Hamilton, Tauranga.

NZDT Time Zone Geo Map
NZDT timezone map

Daylight Saving: New Zealand Daylight Time (NZDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe New Zealand Standard Time (NZST).

Daylight saving time clock moves forward for one hour from 3am to 4amEnd: New Zealand Daylight Time (NZDT) ended on Sunday, April 5, 2026 at 3:00 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:00 am local standard time instead. Daylight saving ends annually on the first Sunday of April

Daylight saving time clock moves back for one hour from 2am to 1amStart: New Zealand Daylight Time (NZDT) starts on Sunday, September 27, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, September 27, 2026, 3:00 am. Daylight saving starts annually on the last Sunday of September

NZDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +13 - basic short
  • +1300 - basic
  • +13:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +1300 - sign character (+) followed by a four digit time providing hours (13) and minutes (00) of the offset. Indicates an offset of thirteen hours to the east of the zero meridian.
IANA/Olson: Reflects NZDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Antarctica/McMurdo
  • Antarctica/South_Pole
  • NZ
  • Pacific/Auckland
Time zones with the GMT +13 offset:
  • FJST - Fiji Summer Time
  • NZDT - New Zealand Daylight Time
  • PHOT - Phoenix Island Time
  • TKT - Tokelau Time
  • TOT - Tonga Time
  • WST - West Samoa Time
  • WSST - West Samoa Standard Time

Central Time

Central Time (CT) is a general term used to describe the areas that observe either the Central Standard Time (CST) or Central Daylight Time (CDT) in the United States and Canada. CT is not static but switches between CDT and CST.

Territories observing the time zone are primarily in North and Central America. It runs through several Mexican and U.S. states, as well as several Canadian provinces and Central American countries.

Countries using this time zone: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States.

Principal Cities: The largest city in the CST time zone is Mexico City in Mexico, with about 12.294 million people. Other major cities in this time zone include Chicago, Houston, Iztapalapa, Ecatepec.

French: HNC - Heure Normale du Centre

Spanish: CT - Tiempo Central Estándar, CT - Zona Centro

CT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -06 - basic short
  • -0600 - basic
  • -06:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0600 - sign character (-) followed by a four digit time providing hours (06) and minutes (00) of the offset. Indicates an offset of six hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Sierra - Military abbreviation for CT
  • S - short form of 'Sierra'
Time zones with the GMT -6 offset:
  • CST - Central Standard Time
  • CT - Central Time
  • MDT - Mountain Daylight Time
  • EAST - Easter Island Standard Time
  • GALT - Galapagos Time
  • S - Sierra Time Zone