Take a look at this webcam feed at around 7-7:30 PM HST
As twilight fades. Awesome
I live within an hours drive of the volcano.
Your advise on Webcam is spot on.
There are so many tourists there,
that there is no parking available.
Best time to go is after 9 P.M. park is open 24/7 so I
recommend you go after ten PM and before five AM.
That way you avoid crowds, work traffic and the Hawaii
road repair school activities( AKA state and county road work)