CST Caribbean to S
Quick answers
CST is 1 hour ahead of S. CST uses GMT -5, and S uses GMT -6 for this comparison.
For example, 7:00 am CST is 6:00 am S. Use the converter above to adjust the date or time and create a shareable meeting link.
Best meeting overlap: 10am-5pm CST, which is 9am-4pm S.
Compare CST time with S time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Cuba Standard Time is 1 hour ahead of Sierra Time Zone
7:00 am07:00 in CST is 6:00 am06:00 in S
CST to S call time
Best time for a conference call or a meeting is between 10am-5pm in CST which corresponds to 9am-4pm in S
7:00 am07:00 Cuba Standard Time (CST). Offset UTC -5:00 hours
6:00 am06:00 Sierra Time Zone (S). Offset UTC -6:00 hours
7:00 am07:00 CST / 6:00 am06:00 S
| CST | S |
|---|---|
| 12am (midnight) | 11pm |
| 1am | 12am (midnight) |
| 2am | 1am |
| 3am | 2am |
| 4am | 3am |
| 5am | 4am |
| 6am | 5am |
| 7am | 6am |
| 8am | 7am |
| 9am | 8am |
| 10am | 9am |
| 11am | 10am |
| 12pm (noon) | 11am |
| 1pm | 12pm (noon) |
| 2pm | 1pm |
| 3pm | 2pm |
| 4pm | 3pm |
| 5pm | 4pm |
| 6pm | 5pm |
| 7pm | 6pm |
| 8pm | 7pm |
| 9pm | 8pm |
| 10pm | 9pm |
| 11pm | 10pm |
| 00:00 | 23:00 |
| 01:00 | 00:00 |
| 02:00 | 01:00 |
| 03:00 | 02:00 |
| 04:00 | 03:00 |
| 05:00 | 04:00 |
| 06:00 | 05:00 |
| 07:00 | 06:00 |
| 08:00 | 07:00 |
| 09:00 | 08:00 |
| 10:00 | 09:00 |
| 11:00 | 10:00 |
| 12:00 | 11:00 |
| 13:00 | 12:00 |
| 14:00 | 13:00 |
| 15:00 | 14:00 |
| 16:00 | 15:00 |
| 17:00 | 16:00 |
| 18:00 | 17:00 |
| 19:00 | 18:00 |
| 20:00 | 19:00 |
| 21:00 | 20:00 |
| 22:00 | 21:00 |
| 23:00 | 22:00 |
Cuba Standard Time
Offset: CST is 5 hours behind Greenwich Mean Time (GMT) and is used in Caribbean
Countries using this time zone: Cuba
Principal Cities: The largest city in the CST time zone is Havana in Cuba, with about 2.164 million people. Other major cities in this time zone include Santiago de Cuba, Camaguey, Holguin, Guantanamo.
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Cuba Daylight Time (CDT).
Start: Cuba Standard Time (CST) started on Sunday, November 2, 2025 at 1:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 12:00 am. Standard time starts annually on the first Sunday of November.
End: Cuba Standard Time (CST) ends on Sunday, March 8, 2026 at 12:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 1:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.
CST 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 an offset of five hours to the west of the zero meridian.
- Romeo - Military abbreviation for CST
- R - short form of 'Romeo'
- America/Havana
- Cuba
- Central Standard Time - UTC -6
- China Standard Time - UTC +8
- Cuba Standard Time - UTC -5
- 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
Sierra Time Zone
Offset: S is 6 hours behind Greenwich Mean Time (GMT) and is used in Military
Daylight Saving: Clocks in Sierra Time Zone (S) do not change for daylight saving time, so S stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
S 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 S
- S - short form of 'Sierra'
- CST - Central Standard Time
- CT - Central Time
- MDT - Mountain Daylight Time
- EAST - Easter Island Standard Time
- GALT - Galapagos Time
- S - Sierra Time Zone