Khloé Kardashian and Lamar Odom Touch Down in New York City

What were they up to in the Big Apple?

They're ready to conquer the concrete jungle (and heat) of New York City.

Khloé Kardashian Odom and her other half, Lamar, landed at JFK airport yesterday afternoon for a very special occasion.

What brought them to the Big Apple, you ask?

"It is going to be a HOT day in NYC today! Lamar and I are excited though!!! Its graduation day for his babies!!!," Khloé tweeted.

The duo congratulated Lamar's daughter Destiny, 14, who has moved on from junior high and will be starting high school in the fall and Lamar Jr., 10, who is celebrating the end of another school year.

So what's the plan for summer vacay, guys?!

The new season of Keeping Up With the Kardashians airs Sundays at 9 p.m. on E!