April 23
The 2018 Toronto Van Attack
The 2018 Toronto Van Attack left a permanent scar on Canada, ending with 10 deaths and sparking debates on mental health and online radicalization. Read more
Stay in the Loop!
Become a Calamity Insider and get exclusive Calamity Calendar updates delivered straight to your inbox.
Thanks! You're now subscribed.
Explore more events in April
Willow Island Disaster
On April 27, 1978, a massive scaffold collapse at the Pleasants Power Station in Willow Island, West Virginia, killed 51 construction workers, making it the deadliest construction accident in U.S. history at the time. The tragedy exposed critical flaws in safety oversight, changed construction practices, and left a lasting mark on both regulatory policy and local communities.
Read moreThe Sinking of KRI Nanggala (402)
The devastating loss of KRI Nanggala (402) highlights the perilous nature of submarine operations and the Indonesian Navy's challenges in modernizing its aging fleet.
Read morePan Am Flight 812 Crash
On April 22, 1974, Pan Am Flight 812, a Boeing 707 en route from Hong Kong to Sydney via Bali, tragically crashed into a mountain near Denpasar, Indonesia, claiming 117 lives.
Read more