Buenos Aires time zone facts
| Date | Thursday, October 1, 2026 |
|---|---|
| Time zone | Argentina Standard Time (America/Argentina/Buenos_Aires) |
| UTC offset | UTC−3 |
| Daylight saving | Not observed |
| Sunrise / sunset | 06:31 AM / 06:55 PM (Thu, October 1) |
| Country | Argentina — one time zone nationwide |
| Coordinates | 34.6° S, 58.38° W |
London to Buenos Aires time converter
When it is a given hour in London, what time is it in Buenos Aires? Highlighted rows fall inside business hours (9 am–6 pm) in both cities — the best window for calls and meetings (5 hours).
| London | Buenos Aires |
|---|---|
| 00:00 | 20:00 (previous day) |
| 01:00 | 21:00 (previous day) |
| 02:00 | 22:00 (previous day) |
| 03:00 | 23:00 (previous day) |
| 04:00 | 00:00 |
| 05:00 | 01:00 |
| 06:00 | 02:00 |
| 07:00 | 03:00 |
| 08:00 | 04:00 |
| 09:00 | 05:00 |
| 10:00 | 06:00 |
| 11:00 | 07:00 |
| 12:00 | 08:00 |
| 13:00 | 09:00 |
| 14:00 | 10:00 |
| 15:00 | 11:00 |
| 16:00 | 12:00 |
| 17:00 | 13:00 |
| 18:00 | 14:00 |
| 19:00 | 15:00 |
| 20:00 | 16:00 |
| 21:00 | 17:00 |
| 22:00 | 18:00 |
| 23:00 | 19:00 |
Buenos Aires time compared with world cities
Differences are relative to Buenos Aires. Where daylight saving applies, a gap can change by an hour during the year.
| City | UTC offset | Compared with Buenos Aires |
|---|---|---|
| Istanbul | UTC+3 | 6 hours ahead |
| London | UTC+1 | 4 hours ahead |
| New York | UTC−4 | 1 hour behind |
| Los Angeles | UTC−7 | 4 hours behind |
| Dubai | UTC+4 | 7 hours ahead |
| Moscow | UTC+3 | 6 hours ahead |
| Tokyo | UTC+9 | 12 hours ahead |
| Sydney | UTC+10 | 13 hours ahead |
Daylight saving time
Buenos Aires does not observe daylight saving time; the clock stays at UTC−3 all year.
Sunrise and sunset in Buenos Aires
Sunrise, sunset and day length for the next 7 days (local time, including atmospheric refraction, ±2 minutes).
| Day | Sunrise | Sunset | Day length |
|---|---|---|---|
| Thu, October 1 | 06:31 AM | 06:55 PM | 12 h 24 min |
| Fri, October 2 | 06:29 AM | 06:55 PM | 12 h 26 min |
| Sat, October 3 | 06:28 AM | 06:56 PM | 12 h 28 min |
| Sun, October 4 | 06:26 AM | 06:57 PM | 12 h 30 min |
| Mon, October 5 | 06:25 AM | 06:58 PM | 12 h 33 min |
| Tue, October 6 | 06:24 AM | 06:58 PM | 12 h 35 min |
| Wed, October 7 | 06:22 AM | 06:59 PM | 12 h 37 min |
Golden hour and blue hour in Buenos Aires
Photographers' soft, warm light (golden hour) happens while the sun is between 6° above and 4° below the horizon; blue hour follows between 4° and 6° below. Local times for Thu, October 1:
| Morning blue hour | 06:05 AM – 06:15 AM |
|---|---|
| Morning golden hour | 06:15 AM – 07:04 AM |
| Evening golden hour | 06:21 PM – 07:10 PM |
| Evening blue hour | 07:10 PM – 07:20 PM |
Golden hour calculator for any date or location
Frequently Asked Questions
What is the time difference between Buenos Aires and London?
Buenos Aires is currently 4 hours behind London.
What time zone is Buenos Aires in?
Buenos Aires is in Argentina Standard Time (UTC−3). IANA time zone ID: America/Argentina/Buenos_Aires.
Does Buenos Aires observe daylight saving time?
Buenos Aires does not observe daylight saving time; the clock stays at UTC−3 all year.
When is golden hour in Buenos Aires?
On Thu, October 1, evening golden hour in Buenos Aires runs 06:21 PM – 07:10 PM and morning golden hour 06:15 AM – 07:04 AM (local time).
What time is sunrise and sunset in Buenos Aires?
On Thu, October 1, sunrise in Buenos Aires is at 06:31 AM and sunset at 06:55 PM, a day length of 12 h 24 min (local time).