ART to JST Converter & Meeting Planner
Quick answer: 9:00 AM ART = 9:00 PM JST (fixed -03:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Argentina Time (ART) and Japan Standard Time (JST)? You need to account for the standard time difference. Japan Standard Time is normally 12 hours ahead of Argentina Time. Whether you are coordinating between teams in Buenos Aires and Córdoba and Tokyo and Osaka, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM ART = 12:00 PM JST. The full 24-hour ART to JST table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM ART = 3:00 AM JST (+1 day).
| ART Time | JST Time |
|---|---|
| 12:00 AM (00:00) | 12:00 PM (12:00) |
| 1:00 AM (01:00) | 1:00 PM (13:00) |
| 2:00 AM (02:00) | 2:00 PM (14:00) |
| 3:00 AM (03:00) | 3:00 PM (15:00) |
| 4:00 AM (04:00) | 4:00 PM (16:00) |
| 5:00 AM (05:00) | 5:00 PM (17:00) |
| 6:00 AM (06:00) | 6:00 PM (18:00) |
| 7:00 AM (07:00) | 7:00 PM (19:00) |
| 8:00 AM (08:00) | 8:00 PM (20:00) |
| 9:00 AM (09:00) | 9:00 PM (21:00) |
| 10:00 AM (10:00) | 10:00 PM (22:00) |
| 11:00 AM (11:00) | 11:00 PM (23:00) |
| 12:00 PM (12:00) | 12:00 AM (00:00)+1 day |
| 1:00 PM (13:00) | 1:00 AM (01:00)+1 day |
| 2:00 PM (14:00) | 2:00 AM (02:00)+1 day |
| 3:00 PM (15:00) | 3:00 AM (03:00)+1 day |
| 4:00 PM (16:00) | 4:00 AM (04:00)+1 day |
| 5:00 PM (17:00) | 5:00 AM (05:00)+1 day |
| 6:00 PM (18:00) | 6:00 AM (06:00)+1 day |
| 7:00 PM (19:00) | 7:00 AM (07:00)+1 day |
| 8:00 PM (20:00) | 8:00 AM (08:00)+1 day |
| 9:00 PM (21:00) | 9:00 AM (09:00)+1 day |
| 10:00 PM (22:00) | 10:00 AM (10:00)+1 day |
| 11:00 PM (23:00) | 11:00 AM (11:00)+1 day |
Best time to call Tokyo from Buenos Aires
For most work calls, compare the normal business day in Buenos Aires (ART) with the business day in Tokyo (JST). ART commonly covers South America, while JST is mainly associated with East Asia.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
⚠️ There is no clean same-day business-hours overlap on 2026-07-05. A practical compromise is around 9:00 PM ART, which reaches 9:00 AM JST near the start of their workday.
- DST Safety: Neither ART nor JST uses Daylight Saving Time in our dataset, making business-hour relationships stable year-round.
- Buenos Aires Stock Exchange (BCBA): 11:00-17:00 local time in Buenos Aires.
- Tokyo Stock Exchange (TSE): 09:00-15:00 local time in Tokyo.
🔥 Popular ART & JST Converters
Frequently searched time zone conversions related to your search.
Related Time Converters
Explore nearby time zone offsets and reverse conversions related to ART and JST.
Frequently Asked Questions
What is the time difference between ART and JST?
During standard time, Japan Standard Time is 12 hours ahead of Argentina Time.
Does Argentina observe Daylight Saving Time?
Argentina permanently abolished Daylight Saving Time in 2009 after years of inconsistent observance. Since then, ART has remained fixed at UTC-03:00 every day of the year, with no seasonal clock changes of any kind.
Are Argentina Time (ART) and Brasilia Time (BRT) the same?
ART and BRT are distinct, separately designated time zones, but they currently share the exact same UTC-03:00 offset. Because neither Argentina nor Brazil's southeastern states currently observe DST, the two zones remain perfectly aligned year-round — though that alignment could change if either country's DST policy shifts.
Does Japan observe Daylight Saving Time?
Japan has not observed Daylight Saving Time since 1951, when the practice introduced during the Allied occupation was abolished by the Japanese government. JST has remained fixed at UTC+9:00 ever since, and there is no current legislation to reintroduce DST in Japan.
Is JST the same as Korean Standard Time (KST)?
Yes, South Korea's Korean Standard Time (KST) operates at the same UTC+9:00 offset as JST, and South Korea also does not observe Daylight Saving Time. The two countries share an identical clock year-round, which simplifies scheduling for the significant trade, technology, and cultural exchange between Tokyo and Seoul.