Welcome to the Portal Page for the 1983: Doomsday ATL. This timeline explores world history after Doomsday - September 26th, 1983. A worldwide nuclear exchange caused by a minor incident obliterates much of human civilization. This ATL covers everything from the direct aftermath up to the present worldwide situation. This is a "live" timeline - its story continues to unfold NOW, in real time. See the Live Content section for the latest news and updates.