AEST to CAT Converter & Meeting Planner
Quick answer: 9:00 AM AEST = 1:00 AM CAT (fixed +10:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Australian Eastern Standard Time (AEST) and Central Africa Time (CAT)? You need to account for the standard time difference. Central Africa Time is normally 8 hours behind Australian Eastern Standard Time. Whether you are coordinating between teams in Sydney and Melbourne and Johannesburg and Harare, 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 AEST = 4:00 PM CAT. The full 24-hour AEST to CAT table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM AEST = 7:00 AM CAT.
| AEST Time | CAT 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 Johannesburg from Sydney
For most work calls, compare the normal business day in Sydney (AEST) with the business day in Johannesburg (CAT). AEST commonly covers Oceania, Australia, while CAT is mainly associated with Southern Africa, Central Africa.
⚠️ 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 AEST, which corresponds to 8:00 AM - 9:00 AM CAT. This window sits inside the typical AEST workday (9:00 AM - 5:00 PM) and the CAT workday (8:00 AM - 5:00 PM).
- DST Safety: AEST or CAT may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Australian Securities Exchange (ASX): 10:00-16:00 local time in Sydney.
- 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 AEST and CAT?
During standard time, Central Africa Time is 8 hours behind Australian Eastern Standard Time.
Does all of eastern Australia observe Daylight Saving Time?
No — eastern Australia is split on DST. New South Wales (Sydney), Victoria (Melbourne), Tasmania (Hobart), and the ACT (Canberra) advance their clocks to AEDT (UTC+11) each October, while Queensland (Brisbane) opts out entirely and remains on AEST (UTC+10) year-round. This means Sydney and Brisbane run on the same clock for only part of the year.
What is the difference between AEST and AEDT?
AEST (Australian Eastern Standard Time) is the UTC+10:00 offset observed during the Southern Hemisphere winter months, roughly April through October. AEDT (Australian Eastern Daylight Time) is the UTC+11:00 offset applied during the Southern Hemisphere summer when clocks spring forward in October, observed by New South Wales, Victoria, Tasmania, and the ACT.
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.