The new schedule is tentative. If conditions for a July 20 opening have not been deemed safe by June 8, the full season will be postponed until 2021.

“We’re hopeful that by late July we will be far enough on the other side of this situation to have the chance to share a few nights under the stars together at the Muny,” the theater’s president and CEO Denny Reagan said in a statement. “Ultimately, the guidance of health and government officials will determine if this is possible.”

Coleman said this is the first time that the 11,000-seat outdoor theater has had to take such measures.

“You might lose a (performance) here and there,” he said, citing the rainout last year of the closing night of “Matilda” as an example. Any delay is conditional on the availability of the creative teams and others involved in the productions, he said.

The Muny produces and mounts its own productions, as it has done for decades. Actors, designers and craftsmen often spend the off-season working at other theaters.