For Sierra Leone in 1957-1962, the standard time was defined in the Alteration of Time Ordinance, 1932 (as amended in 1946, renamed to Local Time Ordinance in 1960 and Local Time Act in 1961). It was unamended throughout that period. Alphabetical Index of the Legislation in force on the 31st day of December, 1957...1963 https://books.google.com/books?id=lvQ-AQAAIAAJ&pg=RA2-PA49 https://books.google.com/books?id=4fQ-AQAAIAAJ&pg=RA2-PA50 https://books.google.com/books?id=p_U-AQAAIAAJ&pg=RA2-PA55 https://books.google.com/books?id=JPY-AQAAIAAJ&pg=RA3-PA37 https://books.google.com/books?id=7vY-AQAAIAAJ&pg=RA3-PA41 https://books.google.com/books?id=W_c-AQAAIAAJ&pg=RA3-PA44 https://books.google.com/books?id=9vk-AQAAIAAJ&pg=RA1-PA47 Also, the "Standard Times" section of The Air Almanac and The Nautical Almanac in that period did not indicate any DST for Sierra Leone. The Air Almanac: 1957 Mar (1958.5-8) https://books.google.com/books?id=atUgEBQtHtkC&pg=SL1-PA20 1957 Jul (1958.9-12) https://books.google.com/books?id=0KY2rR6duhwC&pg=SL1-PA20 1957 Nov (1959.1-4) https://books.google.com/books?id=WYAs3WA6udMC&pg=SL1-PA20 1958 Mar (1959.5-8) https://books.google.com/books?id=oGS4QZuJJg0C&pg=SL1-PA20 1958 Aug (1959.9-12) https://books.google.com/books?id=6G-9_eF5rksC&pg=SL1-PA20 1958 Nov (1960.1-4) https://books.google.com/books?id=ZpwPAQAAIAAJ&pg=PA121 1959 Mar (1960.5-8) https://books.google.com/books?id=yUeLN7rEYX4C&pg=SL1-PA20 1959 Jul (1960.9-12) https://books.google.com/books?id=lYjcV7OhT60C&pg=SL1-PA20 1959 Nov (1961.1-4) https://books.google.com/books?id=pyqItzbOn0QC&pg=SL1-PA20 1960 Apr (1961.5-8) https://books.google.com/books?id=ikbWuVALgxoC&pg=SL1-PA20 1960 Aug (1961.9-12) https://books.google.com/books?id=vJ0PAQAAIAAJ&pg=SL1-PA20 1960 Nov (1962.1-4) https://books.google.com/books?id=bVgtWM6kPZUC&pg=SL1-PA20 1961 Mar (1962.5-8) https://books.google.com/books?id=W2nItAul4g0C&pg=SL1-PA20 1961 Aug (1962.9-12) https://books.google.com/books?id=kFQiAQAAIAAJ&pg=RA4-PA20 1962 Jan (1963.1-4) https://books.google.com/books?id=Ftxx170J--AC&pg=SL1-PA20 1962 May (1963.5-8) https://books.google.com/books?id=VAxyCZRB2EcC&pg=SL1-PA20 1962 Sep (1963.9-12) https://books.google.com/books?id=Y8361ReDPRYC&pg=SL1-PA20 1963 Jan (1964.1-4) https://books.google.com/books?id=tBLVzhTj_5UC&pg=SL1-PA20 The Nautical Almanac: 1957 Dec (1960) https://books.google.com/books?id=PrZPAQAAMAAJ&pg=PA264 1958 Dec (1961) https://books.google.com/books?id=UrZPAQAAMAAJ&pg=PA264 1959 Dec (1962) https://books.google.com/books?id=hbZPAQAAMAAJ&pg=PA264 1960 Oct (1963) https://books.google.com/books?id=urZPAQAAMAAJ&pg=PA264 1961 Oct (1964) https://books.google.com/books?id=1LZPAQAAMAAJ&pg=PA264 1962 Sep (1965) https://books.google.com/books?id=67ZPAQAAMAAJ&pg=PA264