Florida Today Update: After a successful test fire Friday afternoon, SpaceX is targeting 6:36 p.m. Tuesday for Falcon Heavy's launch from Kennedy Space Center. When SpaceX's three-core Falcon Heavy rocket launched on its demonstration flight in early 2018, it attracted more than 100,000 visitors to the Space Coast and garnered millions of webcast-watching fans around the globe. But many agreed that what came after the launch stole the show: The near-simultaneous landings of the vehicle's two side boosters at Cape Canaveral Air Force Station. The Space Coast will see those circumstances again in the coming days when a second Falcon Heavy rocket – technically its first operational mission – launches from Kennedy Space Center's pad 39A with a commercial communications satellite for Saudi Arabia's Arabsat. Teams are targeting no earlier than 6:36 p.m. Sunday for liftoff, though that's dependent on a test firing of the rocket's 27 Merlin main engines, which was scheduled for Thursday evening. The rocket was raised to its vertical position at pad 39A early Thursday, but a test slip to Friday could mean the launch itself pushes to Monday. SpaceX will only confirm an exact launch date after a successful test fire. As of Thursday afternoon, the Air Force's 45th Weather Squadron had not yet released a weather forecast, which is typically released three days before a launch. SpaceX fleet departs SpaceX's marine fleet, meanwhile, executed staggered departures from Port Canaveral this week and sailed toward a zone deep in the Atlantic Ocean that will host the center core's booster landing. After liftoff, Falcon Heavy's two side boosters detach and automatically return to land, but the center core fires a short while longer before separating from the second stage and landing on the Of Course I Still Love You drone ship stationed hundreds of miles off the Florida coast. The ship landings are necessary due to fuel and performance requirements. As of Wednesday, the drone ship was about halfway to the booster's landing zone, according to enthusiast ship tracker spacexfleet.com. SpaceX's drone ships also need support craft, which have departed Port Canaveral en route to the landing zone. The ships typically return to port with the booster a few days after launch. Traffic pattern changes Visitors and residents should be prepared for traffic congestion across the northern parts of Brevard County, especially around the spaceport and Playalinda Beach.