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IOT to CST Converter

Updating current time…
IOT
Indian Chagos Time
GMT +6
12am
3am
6am
9am
12pm
3pm
6pm
9pm
CDT/CST
Central Daylight Time
GMT -5
12am
3am
6am
9am
12pm
3pm
6pm
9pm
Central Time is on daylight saving time: CDT (UTC−5) until Sun, Nov 1.

Mexico City and Saskatchewan stay on CST (UTC−6).

Chicago · CDT (UTC−5)Mexico City, Saskatchewan · CST all year (UTC−6)

Quick answers

Selected conversion

6:00 pm18:00 IOT (UTC+6), Oct 12, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 12, 2026

IOT is 11 hours ahead of CDT.

IOT and CST examples

These examples always use IOT (UTC+6) and CST (UTC-6). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IOT is 12 hours ahead of CST.

CST uses UTC-6 during standard time. For Central Time that follows daylight saving time, use IOT to CT. For daylight-time examples, use IOT to CDT.

How the time difference changes

For most of the year, IOT is 11 hours ahead of CDT. At other times of the year, IOT is 12 hours ahead of CST.

For most of the year, working hours of 9:00 am to 5:00 pm in IOT correspond to 10:00 pm (previous day) to 6:00 am in CDT. At other times of the year, working hours of 9:00 am to 5:00 pm in IOT correspond to 9:00 pm (previous day) to 5:00 am in CST.For most of the year, working hours of 09:00 to 17:00 in IOT correspond to 22:00 (previous day) to 06:00 in CDT. At other times of the year, working hours of 09:00 to 17:00 in IOT correspond to 21:00 (previous day) to 05:00 in CST.

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

Time Difference

Indian Chagos Time is 11 hours ahead of Central Daylight Time.
6:00 pm18:00 in IOT is 7:00 am07:00 in CDT

IOT to CDT call time
Best time for a conference call or a meeting is between 6pm-7pm18:00-19:00 in IOT which corresponds to 7am-8am07:00-08:00 in CDT

6:00 pm18:00 Indian Chagos Time (IOT). Offset UTC +6:00 hours
7:00 am07:00 Central Daylight Time (CDT). Offset UTC -5:00 hours

6:00 pm18:00 IOT / 7:00 am07:00 CDT

IOTCDT
12:00am1:00pm
1:00am2:00pm
2:00am3:00pm
3:00am4:00pm
4:00am5:00pm
5:00am6:00pm
6:00am7:00pm
7:00am8:00pm
8:00am9:00pm
9:00am10:00pm
10:00am11:00pm
11:00am12:00am
12:00pm1:00am
1:00pm2:00am
2:00pm3:00am
3:00pm4:00am
4:00pm5:00am
5:00pm6:00am
6:00pm7:00am
7:00pm8:00am
8:00pm9:00am
9:00pm10:00am
10:00pm11:00am
11:00pm12:00pm
00:0013:00
01:0014:00
02:0015:00
03:0016:00
04:0017:00
05:0018:00
06:0019:00
07:0020:00
08:0021:00
09:0022:00
10:0023:00
11:0000:00
12:0001:00
13:0002:00
14:0003:00
15:0004:00
16:0005:00
17:0006:00
18:0007:00
19:0008:00
20:0009:00
21:0010:00
22:0011:00
23:0012:00

Indian Chagos Time

Offset: IOT is 6 hours ahead Greenwich Mean Time (GMT) and is used in Indian Ocean

Countries using this time zone: British Indian Ocean Territory

Daylight Saving: Clocks in Indian Chagos Time (IOT) do not change for daylight saving time, so IOT stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.

IOT Time Zone Geo Map
IOT timezone map

IOT 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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Foxtrot - Military abbreviation for IOT
  • F - short form of 'Foxtrot'
Time zones with the GMT +6 offset:
  • ALMT - Alma-Ata Time
  • BST - Bangladesh Standard Time
  • BDT - Bangladesh Time
  • BTT - Bhutan Time
  • F - Foxtrot Time Zone
  • IOT - Indian Chagos Time
  • KGT - Kyrgyzstan Time
  • OMST - Omsk Standard Time
  • QYZT - Qyzylorda Time
  • XJT - Xinjiang Time
  • YEKST - Yekaterinburg Summer Time

Central Standard Time

Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America

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

CST Time Zone Geo Map
CST timezone map

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

Daylight saving time clock moves forward for one hourEnd: Central Standard Time (CST) 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.

Daylight saving time clock moves back for one hourStart: Central Standard Time (CST) 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 upcoming clock changes worldwide.

CST 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 CST
  • S - short form of 'Sierra'
IANA/Olson: Reflects CST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Bahia_Banderas
  • America/Belize
  • America/Chicago
  • America/Chihuahua
  • America/Costa_Rica
  • America/El_Salvador
  • America/Guatemala
  • America/Indiana/Knox
  • America/Indiana/Tell_City
  • America/Knox_IN
  • America/Managua
  • America/Matamoros
  • America/Menominee
  • America/Merida
  • America/Mexico_City
  • America/Monterrey
  • America/North_Dakota/Beulah
  • America/North_Dakota/Center
  • America/North_Dakota/New_Salem
  • America/Ojinaga
  • America/Rainy_River
  • America/Rankin_Inlet
  • America/Regina
  • America/Resolute
  • America/Swift_Current
  • America/Tegucigalpa
  • America/Winnipeg
  • CST6CDT
  • Canada/Central
  • Canada/Saskatchewan
  • Mexico/General
  • US/Central
  • US/Indiana-Starke
CST Abbreviation: Several time zones share CST abbreviation and it could refer to these time zones
  • Central Standard Time - UTC -6
  • China Standard Time - UTC +8
  • Cuba Standard Time - UTC -5
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
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT