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CDT
12am
3am
6am
9am
12pm
3pm
6pm
9pm
NZDT
UTC+13
tomorrow (next day)
18h ahead
12am
3am
6am
9am
12pm
3pm
6pm
9pm
MDT/MST
UTC−6
1h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Mountain Time is on daylight saving time: MDT (UTC−6) until Sun, Nov 1.

Arizona stays on MST (UTC−7).

Quick answers

Selected conversion

7:00 am07:00 CDT (UTC-5), Oct 17, 2026 = 1:00 am01:00 NZDT (UTC+13), Oct 18, 2026 = 6:00 am06:00 MDT (UTC-6), Oct 17, 2026

CDT is 18 hours behind NZDT. CDT is 1 hour ahead of MDT.

How the time difference changes

CDT to NZDT

Depending on seasonal clock changes, CDT is 17 hours behind NZST, CDT is 18 hours behind NZDT, or CST is 19 hours behind NZDT.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in CDT correspond to 2:00 am (next day) to 11:00 am (next day) in NZST, working hours of 9:00 am to 6:00 pm in CDT correspond to 3:00 am (next day) to 12:00 pm (next day) in NZDT, or working hours of 9:00 am to 6:00 pm in CST correspond to 4:00 am (next day) to 1:00 pm (next day) in NZDT.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in CDT correspond to 02:00 (next day) to 11:00 (next day) in NZST, working hours of 09:00 to 18:00 in CDT correspond to 03:00 (next day) to 12:00 (next day) in NZDT, or working hours of 09:00 to 18:00 in CST correspond to 04:00 (next day) to 13:00 (next day) in NZDT.

CDT to MST

For most of the year, CDT is 1 hour ahead of MDT. From Nov 1, 2026 to Mar 14, 2027, CST is 1 hour ahead of MST. Briefly around clock changes, CDT is 2 hours ahead of MST or CST and MDT have the same time.

For most of the year, working hours of 9:00 am to 6:00 pm in CDT correspond to 8:00 am to 5:00 pm in MDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CST correspond to 8:00 am to 5:00 pm in MST.For most of the year, working hours of 09:00 to 18:00 in CDT correspond to 08:00 to 17:00 in MDT. At other times of the year, working hours of 09:00 to 18:00 in CST correspond to 08:00 to 17:00 in MST.

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

Time Difference

Central Daylight Time is 18 hours behind New Zealand Daylight Time. Central Daylight Time is 1 hour ahead of Mountain Daylight Time.
7:00 am07:00 in CDT is 1:00 am01:00 in NZDT and is 6:00 am06:00 in MDT

CDT to NZDT call time
Best time for a conference call or a meeting is between 3pm-6pm15:00-18:00 in CDT which corresponds to 9am-12pm09:00-12:00 in NZDT (next day)
CDT to MDT call time
Best time for a conference call or a meeting is between 10am-6pm10:00-18:00 in CDT which corresponds to 9am-5pm09:00-17:00 in MDT

7:00 am07:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
1:00 am01:00 New Zealand Daylight Time (NZDT). Offset UTC +13:00 hours
6:00 am06:00 Mountain Daylight Time (MDT). Offset UTC -6:00 hours

7:00 am07:00 CDT / 1:00 am01:00 NZDT / 6:00 am06:00 MDT

Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.

Hourly time comparison
CDTNZDTMDT
6:00pm11:00pm previous day
7:00pm12:00am
8:00pm1:00am
9:00pm2:00am
10:00pm3:00am
11:00pm4:00am
12:00am next day5:00am
1:00am next day6:00am
2:00am next day7:00am
3:00am next day8:00am
4:00am next day9:00am
5:00am next day10:00am
6:00am next day11:00am
7:00am next day12:00pm
8:00am next day1:00pm
9:00am next day2:00pm
10:00am next day3:00pm
11:00am next day4:00pm
12:00pm next day5:00pm
1:00pm next day6:00pm
2:00pm next day7:00pm
3:00pm next day8:00pm
4:00pm next day9:00pm
5:00pm next day10:00pm
18:0023:00 previous day
19:0000:00
20:0001:00
21:0002:00
22:0003:00
23:0004:00
00:00 next day05:00
01:00 next day06:00
02:00 next day07:00
03:00 next day08:00
04:00 next day09:00
05:00 next day10:00
06:00 next day11:00
07:00 next day12:00
08:00 next day13:00
09:00 next day14:00
10:00 next day15:00
11:00 next day16:00
12:00 next day17:00
13:00 next day18:00
14:00 next day19:00
15:00 next day20:00
16:00 next day21:00
17:00 next day22:00

Central Daylight Time

Offset: CDT is 5 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the CDT time zone is Chicago in the United States, with about 2.664 million people. Other major cities in this time zone include Houston, San Antonio, Dallas, Fort Worth.

French: HAC - Heure Avancée du Centre

Spanish: CT - Zona Centro

Map of the areas on Central Daylight Time (CDT)
CDT part of the year

Today all shaded areas are on CDT.

Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central Standard Time (CST).

123456789101112Start: Central Daylight Time (CDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.

123456789101112End: Central Daylight Time (CDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

CDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -05 - basic short
  • -0500 - basic
  • -05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Romeo - Military abbreviation for CDT
  • R - short form of 'Romeo'
IANA/Olson: Reflects CDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Chicago
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Matamoros
  • America/Menominee
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Resolute
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • US/Central
  • US/Indiana-Starke
CDT Abbreviation: Several time zones share CDT abbreviation and it could refer to these time zones
  • Central Daylight Time - UTC -5
  • Cuba Daylight Time - UTC -4
Time zones with the GMT -5 offset:
  • CDT - Central Daylight Time
  • EST - Eastern Standard Time
  • ET - Eastern Time
  • COT - Colombia Time
  • CST - Cuba Standard Time
  • EASST - Easter Island Summer Time
  • ECT - Ecuador Time
  • PET - Peru Time
  • R - Romeo Time Zone

New Zealand Daylight Time

Offset: NZDT is 13 hours ahead of Greenwich Mean Time (GMT).

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.

Map of the areas on New Zealand Daylight Time (NZDT)
NZDT part of the year

Today all shaded areas are on NZDT.

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

123456789101112Start: New Zealand Daylight Time (NZDT) started on Sunday, September 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, September 27, 2026, 3:00 am03:00. Daylight saving starts annually on the last Sunday of September.

123456789101112End: New Zealand Daylight Time (NZDT) ends on Sunday, April 4, 2027 at 3:00 am03:00 local time and clocks are set one hour back to Sunday, April 4, 2027, 2:00 am02:00 local standard time instead. Daylight saving ends annually on the first Sunday of April.

See New Zealand daylight saving time and upcoming clock changes worldwide.

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

Mountain Standard Time

Offset: MST is 7 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the MST time zone is Phoenix in the United States, with about 1.65 million people. Other major cities in this time zone include Ciudad Juárez, Hermosillo, Culiacán, Denver.

French: HNR - Heure Normale des Rocheuses

Spanish: MT - Zona Pacífico

Map of the areas on Mountain Standard Time (MST)
MST all year MST part of the year

Today the lighter areas are on UTC−6 (MDT).

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Mountain Daylight Time (MDT).

123456789101112End: Mountain Standard Time (MST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.

123456789101112Start: Mountain Standard Time (MST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.

See USA daylight saving time and upcoming clock changes worldwide.

MST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -07 - basic short
  • -0700 - basic
  • -07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0700 - sign character (-) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates an offset of seven hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Tango - Military abbreviation for MST
  • T - short form of 'Tango'
IANA/Olson: Reflects MST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Boise
  • America/Cambridge_Bay
  • America/Ciudad_Juarez
  • America/Creston
  • America/Dawson
  • America/Dawson_Creek
  • America/Denver
  • America/Edmonton
  • America/Fort_Nelson
  • America/Hermosillo
  • America/Inuvik
  • America/Mazatlan
  • America/Phoenix
  • America/Shiprock
  • America/Whitehorse
  • America/Yellowknife
  • Canada/Mountain
  • Canada/Yukon
  • MST
  • MST7MDT
  • Mexico/BajaSur
  • Navajo
  • US/Arizona
  • US/Mountain
Time zones with the GMT -7 offset:
  • MST - Mountain Standard Time
  • PDT - Pacific Daylight Time
  • YST - Yukon Standard Time
  • T - Tango Time Zone