Buenos Aires is 2-3 hours ahead of Houston. Houston uses Central Time (CST/CDT) while Buenos Aires uses Argentina Time (ART, UTC-3). When it's 12:00 PM in Houston, it's 2:00 PM (CST) or 3:00 PM (CDT) in Buenos Aires.
Argentina does not observe daylight saving time, but the US does. The difference is 2 hours during US daylight saving time (March-November) and 3 hours during standard time.
Best calling time: 7:00 AM - 3:00 PM Houston time. This corresponds to 9:00 AM - 5:00 PM (CST) or 10:00 AM - 6:00 PM (CDT) in Buenos Aires, covering Argentine business hours.
Houston and Buenos Aires are connected by direct flights taking about 10 hours. Both are major cities in the Americas with significant energy sector ties, as Houston is a global energy hub and Argentina is a major oil and gas producer.