A theater marquee for a poorly timed concert is drawing attention because it advertises "Explosions in the Sky" on "Sept. 11."

The sign in Boise, Idaho, is promoting a concert by the group Explosions in the Sky, which has the unfortunate timing of taking place on the 10th anniversary of the terror attacks that killed more than 2,700 people at the World Trade Center.

Experts say thousands of New Yorkers still suffer from post-traumatic stress disorder from the twin airplane explosions that could be seen from miles away on that clear morning.

The band has had to contend with 9/11-related questions before.

They released their second album in late August 2001, just before the attacks, called Those Who Tell the Truth Shall Die, Those Who Tell the Truth Shall Live Forever.

The album's artwork features a plane shining a light on an angel, and includes a liner note that reads "this plane will crash tomorrow."

A few months later, guitarist Michael James was detained at an airport because his guitar case had a sticker with the same message.

The Texas-based group played Radio City Music Hall in April.

A spokeswoman did not immediately comment.