On this day, May 21, is the death of Manlilikha ng Bayan Samaon Sulaiman (2011).
The official calendar of the Republic of the Philippines: an almanac of Philippine commemorations enlivened with illustrations and information. –Manila: Presidential Communications Development and Strategic Planning Office, [2014].
On this day in 2002, East Timor became an independent country.
https://www.britannica.com/on-this-day/May-21
Today is the birthday of Glenn Curtiss, a pioneer in making airplanes. If Orville and Wilbur Wright were the first to fly in an airplane, Curtiss was the reason for the development of its manufacture from the use of wood and cloth to metals. He died on July 23, 1930.
https://todayinsci.com/5/5_21.htm
Today, May 21 is World Day for Cultural Diversity for Dialogue and Development.
You may want to read: