On 1 April 1823, Raffles called for a meeting to consider setting up a Malayan college, a process which included transferring the Malaccan Anglo-Chinese College to Singapore. The proposal was supported by Robert Morrison (Dr), a founder of the Malaccan Anglo-Chinese College and a noted missionary and educationist. The resulting birth of the Singapore Institution also led to a call for a library and museum as "a means of diffusing knowledge" to both the Chinese and Malay students equally.



Singapore streets were first lit on 1 April 1824 and by 1862, gas from the Kallang Gas Works powered the street lights until the gas-fuelled street lamps were ended in 1956, and electric lights took over.


Singapore, together with Malacca and Penang, the two British settlements in the Malay Peninsula, became the Straits Settlements in 1826, under the control of British India. By 1832, Singapore had become the centre of government for the three areas. On 1 April 1867, the Straits Settlements became a Crown Colony under the jurisdiction of the Colonial Office in London.



The foundation stone of the former Supreme Court building was laid on 1 April 1937 by Sir Thomas Shenton, Governor and Commander-in-Chief of the Straits Settlements, and to commemorate the event, a cylinder containing coins and newspapers was placed beneath it. Built at a total cost of $1.75 million, the interior and exterior design of the Supreme Court Building was calculated to strike awe.




In 1932, the revenue collected from opium alone reached $5.9 million. However, the social cost of opium consumption proved too high as opium consumption was linked to crime, violence and the breakdown of the family unit. On 1 April 1946, the importation, exportation, purchase and sale of opium were banned.



The University Department of Orthopaedic Surgery was set up on 1 April 1952 in the Singapore General Hospital with Professor J A P Cameron as Head of Department. The Orthopaedic and Traumatic Surgery service established was one of the earliest in this region. At that time it served a population of nearly one million people including some patients from the surrounding countries. Undergraduate teaching started at the same time, with a comprehensive, broad based, clinically oriented programme emphasising practical and basic common problems in Orthopaedic and traumatic surgery.



Police Intelligence Department (PID) started its roots as the Criminal Intelligence Unit (CIU) of the Criminal Investigation Department on 1 April 1973 to support CID's investigations. To reap greater synergies and for better intelligence collation across the entire SPF, the CIU was revamped and upgraded to a division of CID in October 1988; and subsequently to a full-fledged Department on 28 Mar 1996. That marked the tremendous progress of the unit over the years; reflecting the value and contribution of intelligence in SPF’s fight against crimes.



From 1 April 2016, all employers must issue itemised pay slips to employees covered under the Employment Act.