CAT to EST Time Converter
EST is 6 hours behind CAT. CAT is UTC+2:00, and The US East Coast is currently on EDT (UTC-4:00).
Best Time to Call Between CAT and EST
Both zones are inside normal business hours between 3:00 PM and 5:00 PM CAT — that's 9:00 AM to 11:00 AM EST. That's a 2-hour window.
both at work CAT only EST only neither — hours along the strip are CAT.
Common Times Converted
CAT on the left, EST on the right.
CAT to EST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| CAT | EST | Working hours |
|---|---|---|
| 12:00 AM | 6:00 PM prev day | — |
| 1:00 AM | 7:00 PM prev day | — |
| 2:00 AM | 8:00 PM prev day | — |
| 3:00 AM | 9:00 PM prev day | — |
| 4:00 AM | 10:00 PM prev day | — |
| 5:00 AM | 11:00 PM prev day | — |
| 6:00 AM | 12:00 AM | — |
| 7:00 AM | 1:00 AM | — |
| 8:00 AM | 2:00 AM | — |
| 9:00 AM | 3:00 AM | CAT only |
| 10:00 AM | 4:00 AM | CAT only |
| 11:00 AM | 5:00 AM | CAT only |
| 12:00 PM | 6:00 AM | CAT only |
| 1:00 PM | 7:00 AM | CAT only |
| 2:00 PM | 8:00 AM | CAT only |
| 3:00 PM | 9:00 AM | Both zones |
| 4:00 PM | 10:00 AM | Both zones |
| 5:00 PM | 11:00 AM | EST only |
| 6:00 PM | 12:00 PM | EST only |
| 7:00 PM | 1:00 PM | EST only |
| 8:00 PM | 2:00 PM | EST only |
| 9:00 PM | 3:00 PM | EST only |
| 10:00 PM | 4:00 PM | EST only |
| 11:00 PM | 5:00 PM | — |
What CAT and EST Actually Are
CAT — Central Africa Time
Harare, Lusaka, Maputo, Khartoum. Standing at UTC+2:00 as written, and the region does not change its clocks, so that offset holds all year.
Central Africa Time has never used daylight saving. Near the equator the length of the day changes so little that there would be nothing to shift.
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
What This Means in Practice
This gap is not fixed
EST changes its clocks and CAT does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Major Cities in Each Zone
Cities on CAT
Cities on EST
Frequently Asked Questions
What is the time difference between CAT and EST?
EST is 6 hours behind CAT. That is the live figure. Taken strictly as written, the gap between CAT and EST is 7 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM CAT in EST?
9:00 AM CAT is 3:00 AM EST.
What are the best hours to schedule a call between CAT and EST?
Between 3:00 PM and 5:00 PM CAT, which is 9:00 AM to 11:00 AM EST. Both sides are inside normal business hours through that window.
Does the difference between CAT and EST change during the year?
Yes. EST observes daylight saving and CAT does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.