context: In 1965, an extensive electrification project began. The advantage of a late start was that the latest technology, 25 kV and 50Hz, which is still the best technology, could be used. The benefits of electrification are reduced energy consumption and pollution-free operation. The electrification began on the section of the railway line from Helsinki to Kirkkonummi. Scheduled electric train traffic to Kirkkonummi began on January 26, 1969. [8] Many routes were not electrified until the 1990s, such as Tampere-Jyväskylä in 1994 and Helsinki-Turku in 1995. After a few years of construction, the electrification of the Oulu-Rovaniemi line was completed in December 2004 [9] and the Oulu-Iisalmi / Vartius line.
question: When did Finland start using electric trains?
answers.text: January 26, 1969