CAT to CST Converter & Meeting Planner
Quick answer: 9:00 AM CAT = 1:00 AM CST (fixed +02:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Central Africa Time (CAT) and Central Standard Time (CST)? You need to account for the standard time difference. Central Standard Time is normally 8 hours behind Central Africa Time. Whether you are coordinating between teams in Johannesburg and Harare and Chicago and Dallas, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM CAT = 4:00 PM CST. The full 24-hour CAT to CST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM CAT = 7:00 AM CST.
| CAT Time | CST Time |
|---|---|
| 12:00 AM (00:00) | 4:00 PM (16:00)-1 day |
| 1:00 AM (01:00) | 5:00 PM (17:00)-1 day |
| 2:00 AM (02:00) | 6:00 PM (18:00)-1 day |
| 3:00 AM (03:00) | 7:00 PM (19:00)-1 day |
| 4:00 AM (04:00) | 8:00 PM (20:00)-1 day |
| 5:00 AM (05:00) | 9:00 PM (21:00)-1 day |
| 6:00 AM (06:00) | 10:00 PM (22:00)-1 day |
| 7:00 AM (07:00) | 11:00 PM (23:00)-1 day |
| 8:00 AM (08:00) | 12:00 AM (00:00) |
| 9:00 AM (09:00) | 1:00 AM (01:00) |
| 10:00 AM (10:00) | 2:00 AM (02:00) |
| 11:00 AM (11:00) | 3:00 AM (03:00) |
| 12:00 PM (12:00) | 4:00 AM (04:00) |
| 1:00 PM (13:00) | 5:00 AM (05:00) |
| 2:00 PM (14:00) | 6:00 AM (06:00) |
| 3:00 PM (15:00) | 7:00 AM (07:00) |
| 4:00 PM (16:00) | 8:00 AM (08:00) |
| 5:00 PM (17:00) | 9:00 AM (09:00) |
| 6:00 PM (18:00) | 10:00 AM (10:00) |
| 7:00 PM (19:00) | 11:00 AM (11:00) |
| 8:00 PM (20:00) | 12:00 PM (12:00) |
| 9:00 PM (21:00) | 1:00 PM (13:00) |
| 10:00 PM (22:00) | 2:00 PM (14:00) |
| 11:00 PM (23:00) | 3:00 PM (15:00) |
Best time to call Chicago from Johannesburg
For most work calls, compare the normal business day in Johannesburg (CAT) with the business day in Chicago (CST). CAT commonly covers Southern Africa, Central Africa, while CST is mainly associated with North America, Central America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 4:00 PM - 5:00 PM CAT, which corresponds to 9:00 AM - 10:00 AM CST. This window sits inside the typical CAT workday (8:00 AM - 5:00 PM) and the CST workday (9:00 AM - 5:00 PM).
- DST Safety: CAT or CST may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Johannesburg Stock Exchange (JSE): 09:00-17:00 local time in Johannesburg.
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Frequently Asked Questions
What is the time difference between CAT and CST?
During standard time, Central Standard Time is 8 hours behind Central Africa Time.
Does the Central Africa Time zone observe Daylight Saving Time?
None of the countries observing Central Africa Time use Daylight Saving Time. South Africa abolished DST in 1994, and no other CAT-observing nation currently applies seasonal clock changes — CAT remains permanently fixed at UTC+02:00 throughout the year.
Which major countries use Central Africa Time (CAT)?
Central Africa Time is observed by South Africa, Zimbabwe, Zambia, Botswana, Mozambique, Malawi, and Eswatini. South Africa is the zone's dominant economy, with Johannesburg functioning as the region's primary financial center and home to the Johannesburg Stock Exchange (JSE), Africa's largest equity market by capitalization.
Is CST the same as Central Time (CT)?
Central Time (CT) is the umbrella term for the zone, while CST and CDT refer to its two seasonal offsets. CST (UTC-6) applies during standard time from November through March, and CDT (UTC-5) applies during Daylight Saving Time from March through November.
Does Mexico City use CST?
Mexico City operates on UTC-6, the same offset as CST, but it does not observe Daylight Saving Time following Mexico's elimination of the practice under a 2022 law. This means Mexico City stays at UTC-6 year-round while US and Canadian Central Time cities shift to UTC-5 each summer.