Santiago and São Paulo share the same time when Chile is on summer time and Brazil is on standard time. Both use UTC-3. When it's 12:00 PM in Santiago, it's also 12:00 PM in São Paulo.
Chile observes daylight saving time (October to March), moving between UTC-4 and UTC-3. Brazil no longer observes daylight saving time, staying on UTC-3 year-round. During Chile's winter, Santiago is 1 hour behind São Paulo.
Best calling time: 9:00 AM - 5:00 PM works well year-round. The cities are at most 1 hour apart, making coordination easy.
Santiago and São Paulo are South America's most important business centers. Brazil is Chile's largest trade partner in the region. Many multinational companies operate across both markets. Direct flights connect them in about 4 hours.