The times I've been there, it's met from 9:30 to around 1. It's very loose. Here's a link to NaNo LA Calendar:

http://nanolosangeles.org/events-calendar/

What time does the group meet on Saturdays?

Writers' Calendar Los Angeles:

http://www.writerscalendarla.com/writing-groups-2/other-writing-groups/

Spanish language lit fest at the Convention Center May 15-17:

http://www.latimes.com/books/jacketcopy/la-et-jc-leala-20150514-story.html

http://nanolosangeles.org/tag/coffee-connection/

NaNoWriMo writing group, meets informally at the Coffee Connection on Centinela (Culver City) Saturday mornings. As much or as little interaction as you wish--you are there to write.

http://www.meetup.com/writers-blok-la/

Writers Blok gives you a place to work beside and be held accountable by other creative minds like yours. We meet every Monday night from 7 to 10 at Bagel Nosh Deli in Santa Monica. Our mission is to help you get done the work you want to get done.

What you get for your money:

Wine, coffee, chocolate, a weekly book giveaway, and plentiful power outlets and places to sit.

Bring something to work on; from 7 - 9, writers work on their own projects. At 9 p.m., we put down our laptops (or paper) and chat about who we are, what we're trying to get done, and how we plan to do it.

All levels and disciplines are welcome.

Food available for purchase at Bagel Nosh.

PEN International is all about freedom of speech and freedom of the press.  This group runs a robust program in Los Angeles.  For many years I taught workshops at UCLA and various high schools, via PEN's Freedom To Write Program.  I would recommend this organization to anyone who cares about the full spectrum of freedoms--you can help journalists who have been imprisoned for speaking out, attend a lecture, or just get together with other like minded people who care.

http://www.penusa.org