Christchurch to O to EST Time Converter

Updating current time…
Christchurch
New ZealandNZDT
UTC+13
12am
3am
6am
9am
12pm
3pm
6pm
9pm
O
Oscar Time Zone
UTC−2
yesterday (previous day)
15h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
EDT/EST
Eastern Daylight Time
UTC−4
yesterday (previous day)
17h behind
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Eastern Time is on daylight saving time: EDT (UTC−4) until Sun, Nov 1.
Use EST all year (UTC−5)

Quick answers

Selected conversion

1:00 am01:00 NZDT (UTC+13), Oct 31, 2026 = 10:00 am10:00 O (UTC-2), Oct 30, 2026 = 8:00 am08:00 EDT (UTC-4), Oct 30, 2026

Christchurch is 15 hours ahead of O. Christchurch is 17 hours ahead of EDT.

How the time difference changes

Christchurch to O

Depending on seasonal clock changes, Christchurch is 14 hours ahead of O or Christchurch is 15 hours ahead of O.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Christchurch correspond to 7:00 pm (previous day) to 4:00 am in O or working hours of 9:00 am to 6:00 pm in Christchurch correspond to 6:00 pm (previous day) to 3:00 am in O.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Christchurch correspond to 19:00 (previous day) to 04:00 in O or working hours of 09:00 to 18:00 in Christchurch correspond to 18:00 (previous day) to 03:00 in O.

Christchurch to EST

Depending on seasonal clock changes, Christchurch is 16 hours ahead of EDT, Christchurch is 17 hours ahead of EDT, or Christchurch is 18 hours ahead of EST.

Depending on seasonal clock changes, working hours of 9:00 am to 6:00 pm in Christchurch correspond to 5:00 pm (previous day) to 2:00 am in EDT, working hours of 9:00 am to 6:00 pm in Christchurch correspond to 4:00 pm (previous day) to 1:00 am in EDT, or working hours of 9:00 am to 6:00 pm in Christchurch correspond to 3:00 pm (previous day) to 12:00 am in EST.Depending on seasonal clock changes, working hours of 09:00 to 18:00 in Christchurch correspond to 17:00 (previous day) to 02:00 in EDT, working hours of 09:00 to 18:00 in Christchurch correspond to 16:00 (previous day) to 01:00 in EDT, or working hours of 09:00 to 18:00 in Christchurch correspond to 15:00 (previous day) to 00:00 in EST.

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

Time Difference

NZDT (New Zealand Daylight Time) is 15 hours ahead of Oscar Time Zone. NZDT (New Zealand Daylight Time) is 17 hours ahead of Eastern Daylight Time.
1:00 am01:00 in Christchurch, New Zealand is 10:00 am10:00 in O and is 8:00 am08:00 in EDT

Christchurch to O call time
Best time for a conference call or a meeting is between 8:30am-9:30am08:30-09:30 in Christchurch which corresponds to 5:30pm-6:30pm17:30-18:30 in O (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
Christchurch to EDT call time
Best time for a conference call or a meeting is between 9am-11am09:00-11:00 in Christchurch which corresponds to 4pm-6pm16:00-18:00 in EDT (previous day)

1:00 am01:00 NZDT (New Zealand Daylight Time) (Christchurch, New Zealand). Offset UTC +13:00 hours
10:00 am10:00 Oscar Time Zone (O). Offset UTC -2:00 hours
8:00 am08:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours

1:00 am01:00 Christchurch, New Zealand / 10:00 am10:00 O / 8:00 am08:00 EDT

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
Christchurch, New ZealandOEDT
9:00am previous day7:00am previous day
10:00am previous day8:00am previous day
11:00am previous day9:00am previous day
12:00pm previous day10:00am previous day
1:00pm previous day11:00am previous day
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3:00pm previous day1:00pm previous day
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5:00pm previous day3:00pm previous day
6:00pm previous day4:00pm previous day
7:00pm previous day5:00pm previous day
8:00pm previous day6:00pm previous day
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09:00 previous day07:00 previous day
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Christchurch Time Zone and Facts

Time Zone

Abbreviation / Offset
NZDT – New Zealand Daylight Time, UTC+13 (now, daylight saving time)
NZST – New Zealand Standard Time, UTC+12 (standard time)
Daylight Saving Time Ends
123456789101112Sunday, April 4, 2027 at 3:00 amSunday, April 4, 2027 at 03:00: clocks go back 1 hour to 2:00 am02:00 (NZST). DST ends on the 1st Sunday of April each year. Also called Fall Back or Winter Time.
Daylight Saving Time Starts
123456789101112Sunday, September 26, 2027 at 2:00 amSunday, September 26, 2027 at 02:00: clocks go forward 1 hour to 3:00 am03:00 (NZDT). DST starts on the last Sunday of September each year. Also called Spring Forward or Summer Time.
Clock Changes
New Zealand daylight saving time · Clock changes worldwide

Christchurch Facts

Country
New Zealand
Alternative Names
CHC, Christchurch, Christopolis, Cristcirice, Crīstcirice, Kraistcerca, Kraistcercas, Kraisttserts, Kraistčerčas, Kraistčērča, Krajstchehrch, Krajstcherch, Krajstchjorch, Krajstchurch, Krayscoerc, Kraystcherch, Kraysçörç, Kristkirko, Otautahi, ji du cheng, ke lai si te che qi, keulaiseuteucheochi, khi rstcheirch, kiraistcerc, kra'istacarca, kraystshrsh, kuraisutochachi, qryystzrz, Ōtautahi, Κράισττσερτς, Крайстчерч, Крайстчърч, Крайстчэрч, Крайстчёрч, Крајстчерч, קרייסטצרץ, كرايستشرش, کرائسٹ چرچ, کرایست‌چرچ, क्राइस्टचर्च, ক্রাইস্টচার্চ, கிறைஸ்ட்சேர்ச், ക്രൈസ്റ്റ്‌ചർച്ച്‍, ไครสต์เชิร์ช, ခရစ်ချပ်ချ်မြို့, კრაისტჩერჩი, クライストチャーチ, 克赖斯特彻奇, 基督城, 크라이스트처치
Population
419,200
Currency
Dollar (NZD)
Geographic Coordinates
43° 31' S Latitude / 172° 37' E Longitude
International Dialing Code
+64
More About Christchurch
Christchurch local time and city facts

Oscar Time Zone

Offset: O is 2 hours behind Greenwich Mean Time (GMT).

Countries using this time zone: Brazil, Greenland, Saint Pierre and Miquelon, South Georgia and the South Sandwich Islands

Principal Cities: The largest city in the O time zone is Nuuk in Greenland, with about 14,798 people. Other major cities in this time zone include Saint-Pierre, Sisimiut, Ilulissat, Qaqortoq.

Daylight Saving: Some places on Oscar Time Zone (O) keep the same time all year, while others use O for only part of the year and change their clocks for daylight saving time; see upcoming clock changes worldwide.

Map of the areas on Oscar Time Zone (O)
O all year O part of the year

Today all shaded areas are on O.

Open the world time zone map© OpenStreetMap

O representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -02 - basic short
  • -0200 - basic
  • -02:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0200 - sign character (-) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates an offset of two hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Oscar - Military abbreviation for O
  • O - short form of 'Oscar'
Time zones with the GMT -2 offset:
  • PMDT - Pierre & Miquelon Daylight Time
  • WGT - West Greenland Time
  • BRST - Brasilia Summer Time
  • FNT - Fernando de Noronha Time
  • O - Oscar Time Zone
  • UYST - Uruguay Summer Time

Eastern Standard Time

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

Countries using this time zone: Bahamas, Canada, Cayman Islands, Haiti, Jamaica, Mexico, Panama, Turks and Caicos Islands, United States

Principal Cities: The largest city in the EST time zone is New York City in the United States, with about 8.804 million people. Other major cities in this time zone include Toronto, Montréal, Philadelphia, Port-au-Prince.

French: HNE - Heure Normale de l'Est

Spanish: ET - Tiempo del Este, ET - Zona Sureste

Map of the areas on Eastern Standard Time (EST)
EST all year EST part of the year

Today the lighter areas are on UTC−4 (EDT).

Open the world time zone map© OpenStreetMap

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

123456789101112End: Eastern Standard Time (EST) 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: Eastern Standard Time (EST) 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.

EST 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 EST
  • R - short form of 'Romeo'
IANA/Olson: Reflects EST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Atikokan
  • America/Cancun
  • America/Cayman
  • America/Coral_Harbour
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Jamaica
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Panama
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST
  • EST5EDT
  • Jamaica
  • US/East-Indiana
  • US/Eastern
  • US/Michigan
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