It depends on the time of year. Arequipa uses Peru Time (PET, UTC-5) year-round. New York uses EST (UTC-5) in winter and EDT (UTC-4) in summer.
During US standard time (November to March), Arequipa and New York are in the same timezone. During US daylight saving time, Arequipa is 1 hour behind New York.
Excellent overlap! 9:00 AM - 5:00 PM in both cities works perfectly during US standard time. During US DST, call between 9:00 AM - 4:00 PM Arequipa time.
Arequipa, known as the "White City," is Peru's second-largest city and a UNESCO World Heritage Site. It's a growing destination for American tourists visiting Colca Canyon.