High Sierra Topix

I don't visit the west side trailheads very often. But this year we're thinking about doing a late season trip out of Road's End.

Is there a date after which overnight parking is disallowed?
And when does the road typically close?

Thanks, Maverick.

I'm disappointed I wasn't able to find that when I searched as it's right there on the NPS website. I guess my googling skills need some work.