Johannesburg zone
GMT+2 (GMT+2)
Kolkata zone
GMT+5:30 (GMT+5:30)
Difference
3h 30m ahead of Johannesburg
Business overlap
5h (9-5 windows)
Working hours overlap
Each cell is one hour in Johannesburg. Filled cells mark when 9 AM – 5 PM in Johannesburg and Kolkata both apply.
5 hours per day
- Johannesburg
- GMT+2
- Kolkata
- GMT+5:30
- Difference
- +3h 30m
- Business overlap
- 5h
Hour-by-hour conversion
Each row shows the matching local time in Kolkata for an hour in Johannesburg.
| Johannesburg | Kolkata | Day | Window |
|---|---|---|---|
| 12:00 AM | 3:30 AM | same day | — |
| 1:00 AM | 4:30 AM | same day | — |
| 2:00 AM | 5:30 AM | same day | — |
| 3:00 AM | 6:30 AM | same day | — |
| 4:00 AM | 7:30 AM | same day | — |
| 5:00 AM | 8:30 AM | same day | — |
| 6:00 AM | 9:30 AM | same day | — |
| 7:00 AM | 10:30 AM | same day | — |
| 8:00 AM | 11:30 AM | same day | — |
| 9:00 AM | 12:30 PM | same day | Both 9-5 |
| 10:00 AM | 1:30 PM | same day | Both 9-5 |
| 11:00 AM | 2:30 PM | same day | Both 9-5 |
| 12:00 PM | 3:30 PM | same day | Both 9-5 |
| 1:00 PM | 4:30 PM | same day | Both 9-5 |
| 2:00 PM | 5:30 PM | same day | — |
| 3:00 PM | 6:30 PM | same day | — |
| 4:00 PM | 7:30 PM | same day | — |
| 5:00 PM | 8:30 PM | same day | — |
| 6:00 PM | 9:30 PM | same day | — |
| 7:00 PM | 10:30 PM | same day | — |
| 8:00 PM | 11:30 PM | same day | — |
| 9:00 PM | 12:30 AM | next day | — |
| 10:00 PM | 1:30 AM | next day | — |
| 11:00 PM | 2:30 AM | next day | — |
Best meeting windows
If both teams keep standard 9 AM – 5 PM hours, the overlap window is roughly 9:00 AM – 2:00 PM in Johannesburg time. That gives you 5 hours per workday for live meetings.
Tighter overlap is achievable by having the side with later working hours start earlier, or by treating the first and last hours of each side as flexible. The bar above marks every hour where both cities sit inside a 9 AM – 5 PM window.
About converting Johannesburg time to Kolkata time
Johannesburg follows the Africa/Johannesburg time zone (currently GMT+2, GMT+2), while Kolkata follows Asia/Kolkata (currently GMT+5:30, GMT+5:30). Kolkata is 3h 30m ahead of Johannesburg right now.
Neither city observes daylight saving time, so the offset between them is the same all year.
Reverse this conversion
Kolkata to Johannesburg
Open the converter
Plan a meeting between Johannesburg and Kolkata
More conversions from Johannesburg
Frequently asked questions
- How many hours is Johannesburg from Kolkata?
- Kolkata is 3h 30m ahead of Johannesburg right now.
- What time is 9:00 AM Johannesburg in Kolkata?
- 9:00 AM in Johannesburg is 12:30 PM in Kolkata.
- What time is 5:00 PM Johannesburg in Kolkata?
- 5:00 PM in Johannesburg is 8:30 PM in Kolkata.
- When do Johannesburg and Kolkata business hours overlap?
- Standard 9 AM - 5 PM working hours overlap for about 5 hours, roughly from 9:00 AM to 2:00 PM in Johannesburg time.
- Does daylight saving time change the difference between Johannesburg and Kolkata?
- Neither Johannesburg nor Kolkata observes daylight saving time, so the offset between them is constant year-round.
Local time page
Time in Johannesburg
Local time page
Time in Kolkata