To calculate an isoline around an
origin with a specific time, use
departureTime. For a reverse isoline, that is, when using
destination, you can use
arrivalTime are specified as "any", the isoline calculation will not take traffic flow and other time-dependent effects into account. This can be useful when it is not certain for what time of the day the isoline needs to be computed.
curl -X GET \ 'https://isoline.router.hereapi.com/v8/isolines?transportMode=car&origin=52.51578,13.37749&departureTime=2020-05-10T09:30:00&range[type]=time&range[values]=300'