How many epicentral distances must be dertirmed to locate an erahquakes epicenter?

To locate an earthquake's epicenter, data from at least three seismic stations are needed to determine the epicentral distances. Each station measures the time it takes for seismic waves to arrive, which is used to calculate the distance to the epicenter. By intersecting the circles drawn around each station based on these distances, the precise location of the epicenter can be pinpointed.