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https://en.wikipedia.org/wiki/February_28
1997 – An earthquake in northern Iran is responsible for about 3,000 deaths.
1997 – GRB 970228, a highly luminous flash of gamma rays, strikes the Earth for 80 seconds, providing early evidence that gamma-ray bursts occur well beyond the Milky Way.
1947 – February 28 Incident: In Taiwan, civil disorder is put down with the loss of an estimated 30,000 civilians.
2004 – Over one million Taiwanese participate in the 228 Hand-in-Hand rally form a 500-kilometre (310 mi) long human chain to commemorate the February 28 Incident in 1947
"The February 28 incident or the February 28 massacre, also known as the 228 incident was an anti-government uprising in Taiwan that was violently suppressed by the Kuomintang-led Republic of China government, which killed thousands of civilians beginning on 28 February 1947. The number of Taiwanese deaths from the incident and massacre was estimated to be between 5,000 and 28,000.
"The massacre marked the beginning of the White Terror in which tens of thousands of other Taiwanese went missing, died or were imprisoned. The incident is one of the most important events in Taiwan's modern history and was a critical impetus for the Taiwan independence movement."