set Date Time
Sets either the departure time or the arrival time
Only use this method if the departure time is not the current one
See also
<a href="https://developers. google. com/maps/documentation/directions/intro#Request Parameters">departure_time and arrival_time</a>
Parameters
date
The epoch time, in seconds, as an integer
is Departure
True to set the departure_time, false to set the arrival_time