arrival time

hora de llegada; hora de arribo

Defined in Ch3 of the Tsunami Warning Center Reference Guide as follows: "Travel time is a relative time. It is the number of minutes, seconds, etc. that the wave took to complete its journey. The arrival time is the time when we record the arrival of a wave; it is an absolute time." The corret term is hora for this context.

NOT "tiempo"... even though this appears to be used a lot on the web (tiempo de arribo / tiempo de llegada), in many cases it is simply poor translation.