SAST to IST to EST to CST
Time Difference
South Africa Standard Time is 3 hours and 30 minutes behind India Standard Time and 6 hours ahead of Eastern Daylight Time and 7 hours ahead of Central Daylight Time
6:30 pm18:30 in SAST is 10:00 pm22:00 in IST and is 12:30 pm12:30 in EDT and is 11:30 am11:30 in CDT
SAST to IST call time
Best time for a conference call or a meeting is between 8am-2:30pm in SAST which corresponds to 11:30am-6pm in IST
SAST to EST call time
Best time for a conference call or a meeting is between 3pm-6pm in SAST which corresponds to 8am-11am in EST
SAST to CST call time
Best time for a conference call or a meeting is between 4pm-6pm in SAST which corresponds to 8am-10am in CST
6:30 pm18:30 South Africa Standard Time (SAST). Offset UTC +2:00 hours
10:00 pm22:00 India Standard Time (IST). Offset UTC +5:30 hours
12:30 pm12:30 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
11:30 am11:30 Central Daylight Time (CDT). Offset UTC -5:00 hours
6:30 pm18:30 SAST / 10:00 pm22:00 IST / 12:30 pm12:30 EDT / 11:30 am11:30 CDT
| SAST | IST | EDT | CDT |
|---|---|---|---|
| 12am (midnight) | 3:30 am | 6pm | 5pm |
| 1am | 4:30 am | 7pm | 6pm |
| 2am | 5:30 am | 8pm | 7pm |
| 3am | 6:30 am | 9pm | 8pm |
| 4am | 7:30 am | 10pm | 9pm |
| 5am | 8:30 am | 11pm | 10pm |
| 6am | 9:30 am | 12am (midnight) | 11pm |
| 7am | 10:30 am | 1am | 12am (midnight) |
| 8am | 11:30 am | 2am | 1am |
| 9am | 12:30 pm | 3am | 2am |
| 10am | 1:30 pm | 4am | 3am |
| 11am | 2:30 pm | 5am | 4am |
| 12pm (noon) | 3:30 pm | 6am | 5am |
| 1pm | 4:30 pm | 7am | 6am |
| 2pm | 5:30 pm | 8am | 7am |
| 3pm | 6:30 pm | 9am | 8am |
| 4pm | 7:30 pm | 10am | 9am |
| 5pm | 8:30 pm | 11am | 10am |
| 6pm | 9:30 pm | 12pm (noon) | 11am |
| 7pm | 10:30 pm | 1pm | 12pm (noon) |
| 8pm | 11:30 pm | 2pm | 1pm |
| 9pm | 12:30 am | 3pm | 2pm |
| 10pm | 1:30 am | 4pm | 3pm |
| 11pm | 2:30 am | 5pm | 4pm |
| 0:00 | 3:30 | 18:00 | 17:00 |
| 1:00 | 4:30 | 19:00 | 18:00 |
| 2:00 | 5:30 | 20:00 | 19:00 |
| 3:00 | 6:30 | 21:00 | 20:00 |
| 4:00 | 7:30 | 22:00 | 21:00 |
| 5:00 | 8:30 | 23:00 | 22:00 |
| 6:00 | 9:30 | 0:00 | 23:00 |
| 7:00 | 10:30 | 1:00 | 0:00 |
| 8:00 | 11:30 | 2:00 | 1:00 |
| 9:00 | 12:30 | 3:00 | 2:00 |
| 10:00 | 13:30 | 4:00 | 3:00 |
| 11:00 | 14:30 | 5:00 | 4:00 |
| 12:00 | 15:30 | 6:00 | 5:00 |
| 13:00 | 16:30 | 7:00 | 6:00 |
| 14:00 | 17:30 | 8:00 | 7:00 |
| 15:00 | 18:30 | 9:00 | 8:00 |
| 16:00 | 19:30 | 10:00 | 9:00 |
| 17:00 | 20:30 | 11:00 | 10:00 |
| 18:00 | 21:30 | 12:00 | 11:00 |
| 19:00 | 22:30 | 13:00 | 12:00 |
| 20:00 | 23:30 | 14:00 | 13:00 |
| 21:00 | 0:30 | 15:00 | 14:00 |
| 22:00 | 1:30 | 16:00 | 15:00 |
| 23:00 | 2:30 | 17:00 | 16:00 |
South Africa Standard Time
Offset: SAST is 2 hours ahead Greenwich Mean Time (GMT) and is used in Africa
Countries: It is used in following countries: Lesotho, Eswatini (Swaziland), South Africa
Principal Cities: The largest city in the SAST timezone is Cape Town from South Africa with population about 3.433 million people. Other major cities in the area are Durban, Johannesburg, Soweto, Pretoria
Daylight Saving: South Africa Standard Time (SAST) is not adjusted for daylight saving therefore SAST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, South Africa Standard Time remains the same
SAST representations, usage and related time zones
- +02 - basic short
- +0200 - basic
- +02:00 - extended
- +0200 - sign character (+) followed by a four digit time providing hours (02) and minutes (00) of the offset. Indicates two hour and zero minutes time differences to the east of the zero meridian.
- Bravo - Military abbreviation for SAST
- B - short form of 'Bravo'
- Africa/Johannesburg
- Africa/Maseru
- Africa/Mbabane
- CEST - Central European Summer Time
- EET - Eastern European Time
- MESZ - Mitteleuropäische Sommerzeit
- B - Bravo Time Zone
- CAT - Central Africa Time
- IST - Israel Standard Time
- SAST - South Africa Standard Time
- WAST - West Africa Summer Time
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, India Standard Time remains the same
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
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
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Eastern Daylight Time (EDT).
End: Eastern Standard Time (EST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Eastern Standard Time (EST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
EST representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -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.
- Romeo - Military abbreviation for EST
- R - short form of 'Romeo'
- 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
- 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
Central Standard Time
Offset: CST is 6 hours behind Greenwich Mean Time (GMT) and is used in North America
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
Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Central Daylight Time (CDT).
End: Central Standard Time (CST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Central Standard Time (CST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
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 six hour and zero minutes time differences 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
- Colombia 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