What time is it in Cairo when it's 9 AM in Buenos Aires?

3:00 PM — as of 4 October 2026. Cairo is 6 hours ahead of Buenos Aires.

Does the time difference between Buenos Aires and Cairo change?

Yes. In 2026 it's 5 hours or 6 hours, depending on the date, because only Cairo changes its clocks.

What's the best time for a call between Buenos Aires and Cairo?

Between 09:00 and 11:00 Buenos Aires time, when both cities are in working hours (09:00–17:00).

What time zones are Buenos Aires and Cairo in?

Buenos Aires uses America/Argentina/Buenos_Aires (UTC−3 today); Cairo uses Africa/Cairo (UTC+3 today).

Time difference between Buenos Aires and Cairo

Cairo is 6 hours ahead of Buenos Aires. When it's 9:00 in Buenos Aires, it's 15:00 in Cairo.

From

Cairo is 6 hours ahead of Buenos Aires.

On Sunday, 4 October 2026, 09:00 in Buenos Aires is 15:00 in Cairo. Buenos Aires is UTC−3; Cairo is UTC+3.

The gap through 2026

1 Jan – 23 AprCairo is 5 hours ahead of Buenos Aires.
23 Apr – 29 OctCairo is 6 hours ahead of Buenos Aires.
29 Oct – 31 DecCairo is 5 hours ahead of Buenos Aires.

Cairo moves its clocks forward on 23 April (UTC+2 → UTC+3).
Cairo moves its clocks back on 29 October (UTC+3 → UTC+2).

Buenos Aires to Cairo, hour by hour

On Monday 5 October.

Buenos Aires	Cairo
07:00 Early morning	13:00 Working hours
08:00 Early morning	14:00 Working hours
09:00 Working hours	15:00 Working hours
10:00 Working hours	16:00 Working hours
11:00 Working hours	17:00 Evening
12:00 Working hours	18:00 Evening
13:00 Working hours	19:00 Evening
14:00 Working hours	20:00 Evening
15:00 Working hours	21:00 Evening
16:00 Working hours	22:00 Sleeping hours
17:00 Evening	23:00 Sleeping hours
18:00 Evening	00:00+1 Sleeping hours
19:00 Evening	01:00+1 Sleeping hours
20:00 Evening	02:00+1 Sleeping hours
21:00 Evening	03:00+1 Sleeping hours
22:00 Sleeping hours	04:00+1 Sleeping hours

Daylight saving in 2026

Cairo moves its clocks forward on Thursday 23 April (UTC+2 → UTC+3).
Cairo moves its clocks back on Thursday 29 October (UTC+3 → UTC+2).

1 Jan – 23 AprCairo is 5 hours ahead of Buenos Aires.
23 Apr – 29 OctCairo is 6 hours ahead of Buenos Aires.
29 Oct – 31 DecCairo is 5 hours ahead of Buenos Aires.

Best times for a call

Working hours (09:00–17:00) overlap for 2 hours: 09:00–11:00 in Buenos Aires, which is 15:00–17:00 in Cairo.

Buenos Aires 07:00Early morningCairo 13:00Working hours
Buenos Aires 09:00Working hoursCairo 15:00Working hours
Buenos Aires 10:00Working hoursCairo 16:00Working hours

How the time difference calculator works

The difference is each city's offset from UTC on the date you pick, subtracted. Offsets come from the IANA time zone database in your browser.

Because countries change their clocks on different dates — or not at all — the gap between two cities can change for a few weeks a year. The calculator lists every change in the year.

Examples

London is 5 hours ahead of New York for most of the year, but only 4 hours ahead for about three weeks in March and one week in late October.
Dubai doesn't change its clocks, so its gap to London is 4 hours in winter and 3 hours in summer.

Good for

Knowing when a colleague's day starts
Setting expectations for replies across time zones
Planning travel and jet lag

Frequently asked questions

What time is it in Cairo when it's 9 AM in Buenos Aires?: 3:00 PM — as of 4 October 2026. Cairo is 6 hours ahead of Buenos Aires.
Does the time difference between Buenos Aires and Cairo change?: Yes. In 2026 it's 5 hours or 6 hours, depending on the date, because only Cairo changes its clocks.
What's the best time for a call between Buenos Aires and Cairo?: Between 09:00 and 11:00 Buenos Aires time, when both cities are in working hours (09:00–17:00).
What time zones are Buenos Aires and Cairo in?: Buenos Aires uses America/Argentina/Buenos_Aires (UTC−3 today); Cairo uses Africa/Cairo (UTC+3 today).

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