President Biden marked the anniversary of the horrific Kabul airport attack that killed 13 American service members in 2021 — issuing a statement six hours after Speaker Kevin McCarthy lowered the flags of the US Capitol in mourning.

“Two years ago today, we tragically lost 13 brave servicemen and women in Afghanistan,” McCarthy wrote on X, formerly known as Twitter, Saturday morning. “I have directed the flags at the US Capitol to be lowered to half-staff in honor of these American heroes.”

McCarthy followed the post with the names and photos of the 11 Marines, one Navy corpsman, and one Army sergeant — all between the ages of 20 and 31 — who were slain when an ISIS-K suicide bomber assaulted the crowd at the airport’s Abbey Gate during Biden’s chaotic Afghanistan withdrawal.

Biden, enjoying the final day of his Nevada vacation at the $18 million Lake Tahoe estate of Dem donor Tom Steyer, finally acknowledged the grim anniversary hours later, at 4:58 pm, in a White House press release.

“We will forever honor the memory of the 13 service members who were stolen far too soon,” he wrote in a brief statement that did not name those killed — and that did not order the lowering of flags at the executive mansion.

Biden has faced withering criticism from Gold Star families who said Biden treated them callously — checking his watch repeatedly at their dignified transfer ceremony and blathering about the loss of his late son Beau — in the wake of their sons’ and daughters’ deaths.