On Monday morning, when many of the New York City's charter school students were headed to class, Devin Johnson, 9, and his two cousins made their way to an empty playground in the South Bronx. The city's public schools don't start until next Wed., Sept. 9.

Racing their BMX bikes around and around, the children were savoring one more sweet, last week of summer. Johnson said his M.O. for the last few days is simple: "Play. Try to have fun before school comes."

But with his mother watching, Johnson admitted he is also been prepping for math class on the side.

"Multiplication, division and times tables and adding," he said.

Labor Day will arrive as late as it possibly can this year, Sept. 7. That means the first day of school comes later than normal, too. But there are still some things Johnson still hasn't gotten around to before starting fourth grade.

"I'm gonna have to get a haircut," he said. And he's hoping to pick up a pair of black and white Air Jordan's to match his black and white shirt and pants.

His mother, Diane Crawford, is also looking forward to school starting. For her that means, "Relaxation ... quiet time, and I don't have to go to the park every morning no more." 

Memorial Day also came as early as the calendar allows this year — May 25 — making for 15 weeks of unofficial summer. (The summer of 2009 was this long also, as will the summer of 2020.) At a nearby baseball field, one more week means more time on the field for the Latin American Baseball Academy Born to Grow program.

Argenis Espinal, 11, said with one more week, he knows exactly what he'll be doing: "Play baseball, that's all I do."

This summer he's made strides too.

"I'm running faster, I'm throwing harder, and I'm batting better," he said. And like Johnson, he even had time to work on his math game on the side. "I love math, I don't like reading at all, math is the only thing I like at school."

While the kids don't have to worry about school until next week, many adults appear to be slow at getting back to business too. This month is usually when rental apartments are quickly snatched up.

But Marie Jezequel, the founder of New York Habitat, a website for finding furnished apartments to rent in the city, said August had been unusually slow.

"We say in real estate that a shoe box could be rented in September because people usually are desperate and there is low inventory," she said. But "this year we see a difference. People feel like they have all the time, because they have an extra week."

She warns people who are browsing passively online that "the apartment they're looking at right now, it's not going to be there probably because things are ramping [up] fast." 

That extra week may be slipping away, but there's still one summer treat that'll stick around. City beaches will stay open until September 13, one week longer than usual.