After scrubbing the launch of its Falcon 9 rocket at the last second on Sunday, the fourth attempt has reportedly been set for 6:46 p.m. EST this upcoming Tuesday. That’s the same day NASA astronaut Scott Kelly and cosmonaut Mikhail Kornienko are supposed to return to Earth after nearly a year aboard the International Space Station.

According to SpaceX CEO Elon Musk, a boat was seen in the “keep out” zone during yesterday’s launch window, which led to a delay, causing rising oxygen temperatures and a helium bubble within the rocket. Despite this, the ignition sequence went ahead but was aborted in the final seconds of the countdown.

The new launch date was provided a website operated by Space Florida. SpaceX hasn’t yet announced anything official. According to the Orlando Sentinel, the Space Florida website originally said the fourth launch would occur today, but retracted that statement and changed its report to Tuesday.

The launch goal is to shuttle the SES-9 satellite into geostationary orbit, followed by SpaceX’s attempt to land its Falcon 9 rocket onto a floating barge in the Atlantic Ocean. In addition to the previous launch attempts, SpaceX has failed to land its rocket onto floating barges on three different occasions.

SpaceX has said it expects its Falcon 9 to crash, so we’ll probably see some fireworks tomorrow if a launch does indeed happen.