Houston is 1 hour behind Arequipa during standard time (CST, UTC-6). When the US observes DST (CDT, UTC-5), both cities are on the same time.
When it's 12:00 PM in Arequipa, it's 11:00 AM in Houston (winter) or 12:00 PM (summer). Peru does not observe DST.
Business hours overlap almost entirely. Call anytime between 9:00 AM - 6:00 PM in either city for convenient scheduling.
Houston has the largest Peruvian community in Texas. The city's energy sector has business connections with Peru's oil and gas industry.