On 12 October 1406, Chen Yanxiang arrived in Seoul after a four-month journey from Java, becoming the only recorded Indonesian visitor to dynastic Korea across five centuries of records. Four hundred years later, on the same date in 1799, Jeanne Geneviève Labrosse became the first woman to parachute from a balloon, leaping into the frontier of aviation when the technology was barely two years old. In 2010, a Finnish television debate prompted nearly 50,000 viewers to resign from the Evangelical Lutheran Church in a matter of weeks. And in 2019, Eliud Kipchoge ran a marathon in Vienna in one hour, 59 minutes, and 40 seconds, breaking the two-hour barrier that had defined the limits of human endurance. Four moments from one calendar date, each capturing human audacity in vastly different forms. Clara Vale unpacks the extraordinary journeys, brave decisions, and barrier-breaking moments that make 12 October a date worth remembering.