IOT to CST Converter
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Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
6:00 pm18:00 IOT (UTC+6), Nov 2, 2026 = 6:00 am06:00 CST (UTC-6), Nov 2, 2026
IOT is 12 hours ahead of CST.
IOT and CST (US winter time, UTC-6) 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 is US Central winter time (early November to mid-March). The rest of the year Chicago uses CDT (UTC-5), one hour later. 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. From Nov 1, 2026 to Mar 14, 2027, IOT is 12 hours ahead of CST.
For most of the year, working hours of 9:00 am to 6:00 pm in IOT correspond to 10:00 pm (previous day) to 7:00 am in CDT. At other times of the year, working hours of 9:00 am to 6:00 pm in IOT correspond to 9:00 pm (previous day) to 6:00 am in CST.For most of the year, working hours of 09:00 to 18:00 in IOT correspond to 22:00 (previous day) to 07:00 in CDT. At other times of the year, working hours of 09:00 to 18:00 in IOT correspond to 21:00 (previous day) to 06:00 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 12 hours ahead of Central Standard Time.
6:00 pm18:00 in IOT is 6:00 am06:00 in CST
IOT to CST call time
Best time for a conference call or a meeting is between 7am-8am07:00-08:00 in IOT which corresponds to 7pm-8pm19:00-20:00 in CST (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
6:00 pm18:00 Indian Chagos Time (IOT). Offset UTC +6:00 hours
6:00 am06:00 Central Standard Time (CST). Offset UTC -6:00 hours
6:00 pm18:00 IOT / 6:00 am06:00 CST
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.
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Indian Chagos Time
Offset: IOT is 6 hours ahead of Greenwich Mean Time (GMT).
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 representations, usage and related time zones
- +06 - basic short
- +0600 - basic
- +06:00 - extended
- +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.
- Foxtrot - Military abbreviation for IOT
- F - short form of 'Foxtrot'
- 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
- XJT - Xinjiang Time
- YEKST - Yekaterinburg Summer Time
Central Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Belize, Canada, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, 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, Puebla, Santiago de Querétaro.
French: HNC - Heure Normale du Centre
Spanish: CT - Tiempo Central Estándar, CT - Zona Centro
Today all shaded areas are on CST.
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).
Start: Central Standard Time (CST) started on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks were set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
End: Central Standard Time (CST) ends on Sunday, March 14, 2027 at 2:00 am02:00 local time and clocks are set one hour forward to Sunday, March 14, 2027, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
See USA daylight saving time and upcoming clock changes worldwide.
CST representations, usage and related time zones
- -06 - basic short
- -0600 - basic
- -06:00 - extended
- -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.
- Sierra - Military abbreviation for CST
- S - short form of 'Sierra'
- 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
- Central Standard Time - UTC -6
- China Standard Time - UTC +8
- Cuba Standard Time - UTC -5
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone