GST to CAT
-2hGST
GSTSOURCECAT
CATGreen rows indicate typical business hours (9 AM - 5 PM)
GST and CAT on the World Map
The map below highlights the GST (Gulf Standard Time) and CAT (Central Africa Time) timezone regions across the globe.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
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.
Understanding the -2h Gap: GST vs CAT
GST runs on Gulf Standard Time (GST) at UTC+04:00. CAT runs on Central Africa Time (CAT) at UTC+02:00. That puts GST 2 hours behind CAT — a difference of -2h at the current offsets.
In practice, when it is 9:00 AM in GST it is 7:00 AM in CAT. Midnight in GST is 10:00 PM in CAT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to CAT time conversion table
| GST (GST) | CAT (CAT) | Day |
|---|---|---|
| 12:00 AM | 10:00 PM | previous day |
| 6:00 AM | 4:00 AM | same day |
| 7:00 AM | 5:00 AM | same day |
| 8:00 AM | 6:00 AM | same day |
| 9:00 AM | 7:00 AM | same day |
| 12:00 PM | 10:00 AM | same day |
| 3:00 PM | 1:00 PM | same day |
| 5:00 PM | 3:00 PM | same day |
| 6:00 PM | 4:00 PM | same day |
| 9:00 PM | 7:00 PM | same day |
Why people convert GST to CAT time
- Scheduling a call from GST to CAT: a 10:00 AM start in GST lands at 8:00 AM in CAT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GST and CAT are inside the 9-to-5 working day between 11:00 AM and 5:00 PM GST time (9:00 AM–3:00 PM CAT). That is roughly 6 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in GST is 6:00 PM in CAT makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a -2h gap is not.
- Block 11:00 AM–5:00 PM GST as the recurring meeting window if you work primarily from GST and need CAT colleagues present.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
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.
Best time to call between GST and CAT
Both GST and CAT sit inside the 9 AM – 5 PM working day between 11:00 AM–5:00 PM GST, which is 9:00 AM–3:00 PM CAT. That gives roughly 6 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GST and CAT share 6 hours of working-hours overlap (11:00 AM–5:00 PM GST), so scheduling a live meeting is straightforward.
GST is 2 hours behind CAT (GST UTC+04:00 → CAT UTC+02:00). The shared working window is 11:00 AM–5:00 PM GST. 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 GST and CAT?
GST (GST, UTC+04:00) is 2 hours behind CAT (CAT, UTC+02:00). The gap is currently -2h.
How do I convert GST time to CAT time?
Add -2h to GST local time. For example, 9:00 AM in GST is 7:00 AM in CAT.
What time is it in CAT right now?
CAT uses CAT at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -2h offset from GST.
What is the best time to call CAT from GST?
Call between 11:00 AM and 5:00 PM GST — that maps to 9:00 AM–3:00 PM CAT and keeps both parties inside the working day.
Which is behind, GST or CAT?
GST is 2 hours behind CAT. When it is 12:00 PM in GST it is 10:00 AM in CAT.
Does daylight saving time affect the GST–CAT difference?
Neither zone observes daylight saving time, so the -2h offset between GST and CAT is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and CAT?
Not normally. The -2h gap only pushes the date over the previous day.
What is the time difference between GST and CAT?
CAT is -2h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is CAT in?
CAT operates on its local timezone.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
Which cities are in the CAT timezone?
Major cities in the CAT timezone include Harare, Lusaka, Maputo, Lilongwe, Kigali.
What is the UTC offset for CAT?
Central Africa Time (CAT) is at UTC+02:00.
What should I know about the CAT timezone?
Central Africa Time is fixed at UTC+02:00 with no daylight saving. CAT matches South Africa Standard Time (SAST) all year.
When is it midnight in GST, what time is it in CAT?
When it is 12:00 AM (midnight) in GST (GST), it is -2h later in CAT (CAT).
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