On this day, April 11, is the birth of National Artist Bienvenido Lumbera (1932) and the death of National Scientist Alfredo C Santos (1990).
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 1814, Napoleon Bonaparte abdicated as emperor. He was exiled to Elba.
https://www.britannica.com/on-this-day/April-11
On this day in 1970 Apollo 13 launched to the moon. Two days later, an oxygen tank it was carrying exploded. It never reached the moon but returned safely to Earth on April 17.
https://todayinsci.com/4/4_11.htm
This month of April is the Month of Planet Earth (Proclamation No. 1482, s. 2008)
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