Evening EMH are 3 hours, so if AK closes at 6:00 the hours are from 6-9
the Safari does not stay open until 9:00, here is the information from the Disney Website.
Disney's Animal Kingdom® Theme Park
Mornings:
Discovery Island Trails (AM only), It's Tough to be a Bug!®, Kilimanjaro Safaris**, Pangani Forest Exploration Trail® (AM only)
Evenings:
Includes attractions listed above and The Boneyard®, DINOSAUR, Festival of the Lion King, Kali River Rapids, Primeval Whirl®, Tarzan Rocks!, TriceraTop Spin
** Please note that the evening Kilimanjaro Safaris offering closes at 7pm and fluctuates with daylight hours.