Columbine Timeline

Events

Eric Harris and Dylan Klebold arrive at Columbine High School

April 20, 1999 11:10am

Eric Harris and Dylan Klebold arrive at Columbine High School

Shooters approach the school with firearms hidden under their trenchcoats

April 20, 1999 11:17am

First shots fired

April 20, 1999 11:19am

First 911 call from Columbine High School

April 20, 1999 11:22am

First responding officers arrive at the school

April 20, 1999 11:24am

SWAT called for backup

April 20, 1999 11:33am

SWAT arrives

April 20, 1999 11:49am

SWAT is instructed to enter immediately

April 20, 1999 11:52am

1st SWAT team enters Colombine

April 20, 1999 12:06pm

Shooters took their own lives

April 20, 1999 12:08pm