CAT to Japan
+7hCAT
CATSOURCEJapan
JSTGreen rows indicate typical business hours (9 AM - 5 PM)
CAT and JST on the World Map
The map below highlights the CAT (Central Africa Time) and JST (Japan Standard Time) timezone regions across the globe.
CAT – Central Africa Time
UTC+02:00Central Africa Time (CAT, UTC+02:00) covers Zimbabwe, Zambia, Mozambique, Malawi and neighbouring countries.
- •Central Africa Time is fixed at UTC+02:00 with no daylight saving.
- •CAT matches South Africa Standard Time (SAST) all year.
- •It is the same offset as Central European Time in winter.
- •Harare is level with Johannesburg and one hour ahead of Lagos.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
Time Conversion Guide: CAT to Japan
CAT runs on Central Africa Time (CAT) at UTC+02:00. Japan runs on Japan Standard Time (JST) at UTC+09:00. That puts CAT 7 hours ahead of Japan — a difference of +7h at the current offsets.
In practice, when it is 9:00 AM in CAT it is 4:00 PM in Japan. Midnight in CAT is 7:00 AM in Japan. Neither zone observes daylight saving time, so the offset between them stays constant all year.
CAT to Japan time conversion table
| CAT (CAT) | Japan (JST) | Day |
|---|---|---|
| 12:00 AM | 7:00 AM | same day |
| 6:00 AM | 1:00 PM | same day |
| 7:00 AM | 2:00 PM | same day |
| 8:00 AM | 3:00 PM | same day |
| 9:00 AM | 4:00 PM | same day |
| 12:00 PM | 7:00 PM | same day |
| 3:00 PM | 10:00 PM | same day |
| 5:00 PM | 12:00 AM | next day |
| 6:00 PM | 1:00 AM | next day |
| 9:00 PM | 4:00 AM | next day |
Why people convert CAT to Japan time
- Scheduling a call from CAT to Japan: a 10:00 AM start in CAT lands at 5:00 PM in Japan, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both CAT and Japan are inside the 9-to-5 working day between 9:00 AM and 10:00 AM CAT time (4:00 PM–5:00 PM JST). That is roughly 1 hours of usable overlap.
- Booking travel or deliveries: tracking Japan local time against CAT keeps pickup windows and arrival estimates honest across the +7h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM CAT" is unambiguous; "3 PM" across a +7h gap is not.
- Block 9:00 AM–10:00 AM CAT as the recurring meeting window if you work primarily from CAT and need Japan colleagues present.
About CAT (Central Africa Time)
Central Africa Time (CAT) is fixed at UTC+02:00 all year across a broad belt of southern and central Africa, including Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi and the eastern Democratic Republic of the Congo. None of these countries observes daylight saving time, so CAT never shifts. It is the same offset as South Africa Standard Time (SAST) and the winter version of Central European Time, which makes CAT a convenient bridge between African, European and Middle Eastern schedules — Harare is level with Johannesburg all year and one hour ahead of Lagos.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
Best time to call between CAT and Japan
Both CAT and Japan sit inside the 9 AM – 5 PM working day between 9:00 AM–10:00 AM CAT, which is 4:00 PM–5:00 PM JST. That gives roughly 1 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
CAT and Japan overlap for only 60 minutes (9:00 AM–10:00 AM CAT), so meetings have to be booked precisely.
CAT is 7 hours ahead of Japan (CAT UTC+02:00 → JST UTC+09:00). The shared working window is 9:00 AM–10:00 AM CAT. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between CAT and Japan?
CAT (CAT, UTC+02:00) is 7 hours ahead of Japan (JST, UTC+09:00). The gap is currently +7h.
How do I convert CAT time to Japan time?
Add +7h to CAT local time. For example, 9:00 AM in CAT is 4:00 PM in Japan.
What time is it in Japan right now?
Japan uses JST at UTC+09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +7h offset from CAT.
What is the best time to call Japan from CAT?
Call between 9:00 AM and 10:00 AM CAT — that maps to 4:00 PM–5:00 PM JST and keeps both parties inside the working day.
Which is ahead, CAT or Japan?
CAT is 7 hours ahead of Japan. When it is 12:00 PM in CAT it is 7:00 PM in Japan.
Do CAT and Japan use different time zones?
CAT uses CAT at UTC+02:00, while Japan (Japan) uses JST at UTC+09:00. The IANA identifiers are Africa/Harare and Asia/Tokyo.
Does daylight saving time affect the CAT–Japan difference?
Neither zone observes daylight saving time, so the +7h offset between CAT and Japan is fixed all year.
Which other cities share CAT's time zone?
CAT also covers Harare, Lusaka, Maputo, Lilongwe, Kigali.
Which countries use CAT, CAT's zone?
CAT is used in Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi, DR Congo (east).
Is there a day difference between CAT and Japan?
Not normally. The +7h gap only pushes the date over for late-evening times.
What is the time difference between CAT and Japan?
Japan is +7h from CAT.
What timezone is CAT in?
CAT operates on its local timezone.
What timezone is Japan in?
Japan operates on its local timezone.
Which countries use CAT (Central Africa Time)?
CAT is used in Zimbabwe, Zambia, Mozambique, Malawi, Rwanda, Burundi, and 1 more countries.
Does CAT observe daylight saving time?
No, CAT does not observe daylight saving time and remains at UTC+02:00 year-round.
What are some interesting facts about CAT?
Central Africa Time is fixed at UTC+02:00 with no daylight saving. CAT matches South Africa Standard Time (SAST) all year.
Which cities are in the JST timezone?
Major cities in the JST timezone include Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka.
What is the UTC offset for JST?
Japan Standard Time (JST) is at UTC+09:00.
What should I know about the JST timezone?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
When is it midnight in CAT, what time is it in Japan?
When it is 12:00 AM (midnight) in CAT (CAT), it is +7h later in Japan (JST).
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