Tickets for tonight’s Madonna concert at Boardwalk Hall in Atlantic City say the show starts at 8 p.m., but don’t expect the Queen of Pop to arrive on stage when the clock strikes the hour.

On at least two stops on the current leg of her tour, she took the stage after 10 p.m.

The doors to Boardwalk Hall will open at 7 p.m., with DJ Paul Oakenfeld scheduled as the opening act. Madonna will appear after Oakenfeld finishes. But, as of Friday, Boardwalk Hall officials didn’t know what time that would be.

Madonna started off the North American leg of her MDNA Tour on Aug. 28 at the Wells Fargo Center in Philadelphia. That show also had an 8 p.m. scheduled start, but she did not come on stage until 10:24 p.m., according to multiple reports on the concert.

A DJ entertained the center crowd, which grew restlesss and angry during the lengthy wait. The audience shouted obscenities and began to boo right before the house lights went down and Madonna went on stage, according to reports on phillymag.com.

After 45 minutes of singing and dancing, Madonna — who had just wrapped up the European leg of the tour — offered an explanation for why she didn’t come on stage on time.

“I want to apologize for being late. We had many changes to make from Europe to America, and I wanted the show to be perfect for you because my fans deserve it, and quite frankly, I deserve it,” said Madonna, as quoted by phillymag,com.

The singer has since performed eight other shows, the last being a two-night stand in Toronto on Wednesday and Thursday. She took the stage at 10:15 p.m. during an Aug. 30 show in Montreal, the second stop on this leg of the tour, according to reports in the Montreal Gazette.

Madonna’s show may be the highest grossing concert of this year at Boardwalk Hall, with prices at $80, $155, $255 and $355 for each ticket, an official said. Some tickets were still available for the Madonna concert as of Friday. There will be about 14,000 people inside the arena tonight if the show sells out.

The last time Atlantic City hosted Madonna was on Nov. 22, 2008, on her Sticky & Sweet Tour, also at Boardwalk Hall.

Madonna is the best-selling female recording artist in history.

On Friday morning, the singer called in to the Mike and Diane show on WAYV-FM 95.1, said Gary Fisher, president of Equity Communications in West Atlantic City, which owns WAYV. The station has been giving away concert tickets all week and will be set up tonight outside Boardwalk Hall giving away beach balls and T-shirts, Fisher said.

“It (Madonna’s show) is one of many wonderful events that are combining to create Atlantic City as a destination as opposed to just a gambling town,” Fisher said.

Madonna is touring to support her latest album, MDNA. The disc’s first single, “Give Me All Your Luvin’,” is getting airplay on radio stations, including WWAC-FM 102.7, commonly known as AC 102.7.

“It’s truly remarkable that she has been able to not only be relevant but huge for 25 years,” said Paul Kelly, vice president of broadcast operations for the station in Linwood. “There are plenty of acts that are still on the road 25 years later, but they are not still playing the big arenas like she is. It’s a special event. It’s not like she comes through all the time.”

Contact Vincent Jackson:

609-272-7202