CT
Central Time
GMT -6
EST
Eastern Standard Time
GMT -5
Australia
AEDT

Time Difference

Central Time is 1 hours behind Eastern Standard Time and 17 hours behind AEDT (Australian Eastern Daylight Time)
6:30 pm18:30 in CT is 7:30 pm19:30 in EST and is 11:30 am11:30 in Sydney, Australia

CT to EST call time
Best time for a conference call or a meeting is between 8am-5pm in CT which corresponds to 9am-6pm in EST
CT to Sydney call time
Best time for a conference call or a meeting is between 4:30am-6:30am in CT which corresponds to 9:30pm-11:30pm in Sydney

6:30 pm18:30 Central Time (CT). Offset UTC -6:00 hours
7:30 pm19:30 Eastern Standard Time (EST). Offset UTC -5:00 hours
11:30 am11:30 AEDT (Australian Eastern Daylight Time) (Sydney, Australia). Offset UTC +11:00 hours

6:30 pm18:30 CT / 7:30 pm19:30 EST / 11:30 am11:30 Sydney, Australia

CT EST Sydney, Australia
12am (midnight) 1am 5pm
1am 2am 6pm
2am 3am 7pm
3am 4am 8pm
4am 5am 9pm
5am 6am 10pm
6am 7am 11pm
7am 8am 12am (midnight)
8am 9am 1am
9am 10am 2am
10am 11am 3am
11am 12pm (noon) 4am
12pm (noon) 1pm 5am
1pm 2pm 6am
2pm 3pm 7am
3pm 4pm 8am
4pm 5pm 9am
5pm 6pm 10am
6pm 7pm 11am
7pm 8pm 12pm (noon)
8pm 9pm 1pm
9pm 10pm 2pm
10pm 11pm 3pm
11pm 12am (midnight) 4pm
0:00 1:00 17:00
1:00 2:00 18:00
2:00 3:00 19:00
3:00 4:00 20:00
4:00 5:00 21:00
5:00 6:00 22:00
6:00 7:00 23:00
7:00 8:00 0:00
8:00 9:00 1:00
9:00 10:00 2:00
10:00 11:00 3:00
11:00 12:00 4:00
12:00 13:00 5:00
13:00 14:00 6:00
14:00 15:00 7:00
15:00 16:00 8:00
16:00 17:00 9:00
17:00 18:00 10:00
18:00 19:00 11:00
19:00 20:00 12:00
20:00 21:00 13:00
21:00 22:00 14:00
22:00 23:00 15:00
23:00 0:00 16:00

Central Time

Central Time (PT) 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: It is used in following countries: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States.

Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are Chicago, Houston, Iztapalapa, Ecatepec.

French: HNC - Heure Normale du Centre

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

Central Time (PT) 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: It is used in following countries: Belize, Canada, Costa Rica, Guatemala, Honduras, Mexico, Nicaragua, El Salvador, United States.

Principal Cities: The largest city in the CST timezone is Mexico City from Mexico with population about 12.294 million people. Other major cities in the area are 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 six hour and zero minutes time differences 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'
CT Abbreviation: Several time zones share CT abbreviation and it could refer to these time zones
  • Central Time - UTC -6
  • Chuuk Time - UTC +10
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

Eastern Standard Time

Offset: EST is 5 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Bahamas, Canada, Haiti, Jamaica, Cayman Islands, Mexico, Panama, Turks & Caicos Is, United States

Principal Cities: The largest city in the EST timezone is New York City from USA with population about 8.175 million people. Other major cities in the area are Toronto, Montreal, Brooklyn, Borough of Queens

French: HNE - Heure Normale de l'Est

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

EST Time Zone Geo Map
EST timezone map

Daylight Saving: This is a standard timezone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Eastern Daylight Time (EDT).

Daylight saving time clock moves back for one hour from 2am to 1amStart: Eastern Standard Time (EST) started on Sunday, November 3, 2024 at 2:00 am local time and clocks were set one hour back to Sunday, November 3, 2024, 1:00 am. Standard time starts annually the on first Sunday of November.

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Eastern Standard Time (EST) ends on Sunday, March 9, 2025 at 2:00 am local time and clocks are set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time starts annually the on second Sunday of March.

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 five hour and zero minutes time differences 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

Sydney Information

Time Zone

Abbreviation / Name
AEDT - Australian Eastern Daylight Time
UTC / GMT Offset
+11:00 hours during Australian Eastern Daylight Time, currently in use.

Sydney Facts

Country
Australia
Alternative Names
SYD, Sanctus Dionysius, Sedniejos, Sek-na, Sidnef, Sidnei, Sidnej, Sidneja, Sidnejo, Sidnejus, Sidney, Sidneý, Sidni, Sidnéy, Sidnėjus, Sit-ni, Sit-nì, Syd, Sydneium, Sydney, Sydney City, Sék-nà̤, Sídney, Sîdney, Sėdniejos, citni, shidoni, sidani, sideuni, sidnei, sidni, sidniy, sydny, xi ni, xue li, Σίδνεϋ, Сиднеи, Сидней, Сиднеј, Сидни, Сідней, Сідні, Սիդնեյ, סידני, سيدنى, سيدني, سڈنی, سیدنی, ܣܝܕܢܝ, सिडनी, सिड्नी, सिद्नी, সিডনি, ਸਿਡਨੀ, સીડની, சிட்னி, సిడ్నీ, ಸಿಡ್ನಿ, സിഡ്നി, සිඩ්නි, ซิดนีย์, སིད་ནེ།, ဆစ်ဒနီမြို့, სიდნეი, ሲድኒ, ស៊ីដនីយ៏, シドニー, 悉尼, 雪梨, 시드니
Population
4,627,345
Currency
Dollar (AUD)
Geographic Coordinates
33° 52' S Latitude / 151° 12' E Longitude
International Dialing Code
+61