Mar del Plata keeps UTC−3 all year. There is no daylight saving time, so the clock never changes.
Mar del Plata and your time
Mar del Plata at a glance
| Country | Argentina |
|---|---|
| Region | Buenos Aires |
| Time zone | America/Argentina/Buenos_Aires |
| UTC offset now | UTC−3 |
| Daylight saving time | Not observed since 2009 |
| Coordinates | 38.00° S, 57.56° W |
Which time zone Mar del Plata uses
The clocks in Mar del Plata follow America/Argentina/Buenos_Aires and do not move with the seasons. The last daylight saving period here was in 2009. Since then the offset has stayed at UTC−3.
All of Argentina keeps the same time, so Mar del Plata reads the same clock as Buenos Aires.
Clock changes in Mar del Plata, 2026 and 2027
No clock changes are scheduled in Mar del Plata for 2026 or 2027.
How far ahead or behind Mar del Plata is
Take 9:00 AM in Mar del Plata: the clock reads 12:00 PM in London, 11:00 PM in Sydney and 4:00 AM in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 2 h behind | 2 h behind | 1 h behind | 6 h |
| Los Angeles (United States) | --:-- | 5 h behind | 5 h behind | 4 h behind | 3 h |
| London (United Kingdom) | --:-- | 3 h ahead | 3 h ahead | 4 h ahead | 5 h |
| Paris (France) | --:-- | 4 h ahead | 4 h ahead | 5 h ahead | 4 h |
| Dubai (United Arab Emirates) | --:-- | 7 h ahead | 7 h ahead | 7 h ahead | 1 h |
| Mumbai (India) | --:-- | 8 h 30 min ahead | 8 h 30 min ahead | 8 h 30 min ahead | None |
| Singapore | --:-- | 11 h ahead | 11 h ahead | 11 h ahead | None |
| Tokyo (Japan) | --:-- | 12 h ahead | 12 h ahead | 12 h ahead | None |
| Sydney (Australia) | --:-- | 14 h ahead | 14 h ahead | 13 h ahead | None |
| UTC | --:-- | 3 h ahead | 3 h ahead | 3 h ahead | 5 h |
Because Mar del Plata keeps one offset all year, any change in the gap comes from the other city’s daylight saving time. Compare the January and July columns.
Shared office hours is the part of a 9 AM to 5 PM local working day that both cities have in common. Weekends are not taken into account.
Sunrise, sunset and day length in Mar del Plata
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Seasons run the other way in Mar del Plata: the December solstice brings 14 hours 49 minutes of daylight and the June solstice only 9 hours 31 minutes.
Daylight through the year in Mar del Plata
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:53 AM | 7:01 PM | 12 h 8 min |
| June solstice | June 21 | 8:06 AM | 5:38 PM | 9 h 31 min |
| September equinox | September 22 | 6:40 AM | 6:47 PM | 12 h 7 min |
| December solstice | December 21 | 5:24 AM | 8:13 PM | 14 h 49 min |
When the sun is highest in Mar del Plata
The clock in Mar del Plata runs ahead of the sun. Solar noon, the moment the sun is highest, comes at about 12:50 PM on standard time. That is why sunrise and sunset both come late here.
Places close to Mar del Plata
Every city below shares Mar del Plata’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Tandil | 158 km (98 mi) | --:-- | Same time |
Same time now, different rules
These places read the same time as Mar del Plata today but follow different rules, so they can drift apart when clocks change.
More cities in Argentina
All time zones and cities in Argentina
Tools for time in Mar del Plata
- Convert a time to or from Mar del Plata: pick a date and time and see it in every city on your list.
- Add Mar del Plata to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Mar del Plata and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Mar del Plata in?
Mar del Plata uses the America/Argentina/Buenos_Aires time zone, which is UTC−3 all year.
Does Mar del Plata use daylight saving time?
Not any more. Mar del Plata last changed its clocks for daylight saving time in 2009 and now stays on UTC−3 all year.
What is the time difference between Mar del Plata and London?
Mar del Plata is 3 hours behind London in January and 4 hours behind London in July, because London moves its clocks for daylight saving time and Mar del Plata does not.
Is Mar del Plata on the same time as Buenos Aires?
Yes. Mar del Plata and Buenos Aires both use UTC−3 right now.
How long is the longest day in Mar del Plata?
About 14 hours 49 minutes, around the December solstice. The shortest day, around the June solstice, has about 9 hours 31 minutes of daylight.
Why is the sun not highest at noon in Mar del Plata?
Clock time follows the time zone, not the sun. Mar del Plata lies west of the line its offset is based on, so solar noon comes at about 12:50 PM on standard time.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.