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On this day, January 3, is the birth of National Artist Severino Montano (1915) and Manlilikha ng Bayan Ginaw Bilog (1953).
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 1521, Martin Luther was excommunicated by the order of Pope Leo X.
https://www.britannica.com/on-this-day/January-3
On this day in 1919, Ernest Rutherford succeeded in breaking apart a nitrogen atom and transmuting it into oxygen.
https://www.todayinsci.com/1/1_03.htm
January is National Microinsurance Month (Proclamation No. 1212, s. 2007).