Sept. 11, 2001 is a historic day in America and around the world.
For many, it felt like the world stood still as they watched or heard about the collapse of the Twin Towers, then the crash into the Pentagon and, finally, the crash of United Airlines Flight 93.
The day has gone down in history as one of the most tragic days in the country, claiming the lives of nearly 3,000 people and injuring more than two times as many.
During past anniversaries, the hashtag #WhereWereYou surfaced on social media as many people recounted where they learned of the attacks.
Many of the heartbreaking messages convey how people felt. Dozens showed that the attacks happened when many social media users were young and detailed how their families reacted, shaping the gravity of the news.
I was in Los Angeles, El Segundo (right next to LAX), wondering why it was so...quiet. Turned on the tv and found out why. #wherewereyou— Christian Collins 🎙 (@mediachristian4) September 11, 2017
Putting my child on the bus to kindergarten. Now a senior in college #wherewereyou— waitwhat (@waitwhat369) September 11, 2017
I was at work in Manhattan. Every detail of that day is burned into my memory. I still can't watch film footage from 9/11.😔💔🇺🇸 #wherewereyou— CaliphateCrusher👠 (@Caliphate_Crush) September 11, 2017
I was home as a freelance writer with my firstborn baby playing in the floor when I saw the towers fall. Everything changed. #wherewereyou— Dana Loesch (@DLoesch) September 11, 2017
In college, ready 2 head to class. Watched 2nd tower get hit live. Met bf after his class- had to tell him US was under attack #wherewereyou— Jen S (@msgreenjeans) September 11, 2017
#wherewereyou I was in the truck. Business was dead. I called dispatch. They asked if I had seen the news. Then told me to go home and watch— Brian #Arizona Feel the heat. 🇺🇸🏁 (@brian480480) September 11, 2017
Creative writing. Senior year of high school. Teacher wouldn't turn on the tv until he heard adults screaming in the hall. #WhereWereYou— melissa (@MelissaIsArtsy) September 11, 2017
I remember coming home to a dark and very quiet house that day. The only light on was in the TV room where everyone watched it #WhereWereYou— Tirza (@TirzaFrohms) September 11, 2016
On conference call, co-worker's brother called his cell from NYC, he interrupted our cc call to tell us#WhereWereYou— MsCowboyBoots🌵 (@MsCBBoots) September 11, 2016
I was waitressing and 8 months pregnant. I was scared to bring a baby into the world. I thought humanity died that day. #WhereWereYou— KingMomma (@DKingstrom) September 11, 2016
#WhereWereYou At work and we noticed the telephones stopped ringing.— Cat Snedeker (@CatSnedeker) September 11, 2016
#WhereWereYou at work watching everyone was using my cellphone because all landlines and other phones were out— Lisa McLovin (@AATRHF) September 11, 2016
At my desk at work, couldn't believe what I was hearing on radio. Boss closed office. Got my kids from Kinder & pre-sch. #WhereWereYou— mom3x (@mommy_3x) September 11, 2016
#WhereWereYou in Italy and my flight to USA was scheduled the following day...one of the most emptiest flights I have ever taken....:(— Haute Retreats (@HauteRetreats) September 11, 2016
Watching Sesame Street with my baby. Called my Grandma who lives 3 miles from WTC. Last time I got thru to her for 3 weeks. #WhereWereYou— Lorraine R. (@LorraineTravels) September 11, 2016
I remember waking up 9/11 when my brother ran inside and told me what happened. We watched the 2nd plane hit the tower. Scariest site ever.— Gares (@GaresMusic) September 11, 2016
Do you remember what you were doing on 9/11? I do. I recall sitting at my brother's kitchen counter watching the... https://t.co/XeumiqoBdq— Carl Jackson (@carljacksonshow) September 11, 2016