Dadar West’s ‘progress of matter’ began on 12 April 1867, when the first four-bogey local train left Virar at 6.45 in the morning, picked up passengers from Borivali, Goregaon, Andheri, Bandra, Mahim and Dadar to deposit them at a station in Backbay Reclamation, located somewhere between today’s Churchgate and Marine Lines stations. The train left Backbay at 5.30 in the evening to bring passengers home from their workplaces. By 1925, when Shivaji Park came into being, 1,323 trains were running on the Bombay, Baroda and Central India Railway (BB&CI) tracks. Many were electrified and carried around 35 lakh passengers back and forth every day. Long after 1951, when the BB&CI Railway was merged with the Saurashtra, Rajputana, Jaipur State and Cutch State Railways to form the Western Railway, Dadar West station continued to be called BB Dadar and Dadar East GIP Dadar. GIP stood for the Greater Indian Peninsula Railway which had started its local service in 1856.