Yes, I write a variation of this article every year, so here is the 2018 iteration: Disneyland Halloween Time begins on September 7 and runs through October 31. As the first Halloween theme park to open its cemetery gates every year, Disneyland unofficially determines the length of the season, which will run for eight weeks - nearly two full months!
Halloween time takes place during regular hours at Disneyland and Disneyland California Adventure. Activities are included with regular admission price (starting at $97 for a single day).
Also on the menu is Mickey's Halloween Party, which runs on September 19, 21, 24, 26, 28; October 2, 5 (sold out), 9, 12 (sold out), 16, 19, 23, 26, 29, 31. Hours are 6-11pm Mondays through Thursdays and 7pm-midnight on Fridays. Tickets are $105 for Mickey's Halloween Party.
It seems like only a few years ago we were halfway joking about the day when "Halloween Creep" would extend into the first half of September. That joke is now a reality taken more or less for granted.