Creation Day

The Creation Day, according to Indev scientists, is a event happening on October 16, 6000BC. Any time before that is considered "Old-time". It is where Norton, the dad of Notch and the King of Time, abolished the Second World after Herobrine's invasion. He later gives his powers to his son Notch, who shaped the current, Third World, or the "World of Creation"

Notch himself has said that his father "never told him about what happened to the Second World, although I asked him several times". It's likely that there was a zombie apoclaypse, because that is what happened to the First World. On October 20, 6000BC (or May 13, 2009 in Earth time) the Third World was created. Steve, also commonly known as Player One, was born (in his first iteration) on October 23, 6000BC. Good Herobrine was born on October 24, 6000BC.