On September 21
No pivotal events are recorded on exactly September 21. The closest is The global climate strikes on September 20 (1 day earlier).
This week in history (Sep 18 to Sep 24)
On 19 September 1893 the Governor of New Zealand, Lord Glasgow, signed a new Electoral Act into law, making the colony the first self-governing nation in the world to grant all adult women the right to vote in parliamentary elections.
On 18 September 1931, officers of Japan's Kwantung Army detonated explosives on a Japanese-owned railway near Mukden (Shenyang) and blamed Chinese forces, staging the false-flag Mukden Incident as a pretext for invasion.
From 20 to 27 September 2019 the world saw the largest coordinated climate protests in history, a 'Global Week for Future' that drew an estimated 6 to 7.6 million participants across roughly 4,500 locations in more than 150 countries.
On 24 September 2025, the biotechnology firm uniQure reported pivotal trial results showing that its gene therapy AMT-130 slowed the progression of Huntington's disease by roughly 75 percent over three years, the first treatment ever to…