IFA Saltlake Stadium stations. NOC to be valid for a year. 2019-July-18: Operations handed over to Metro Railway, Kolkata from Kolkata Metro Rail Corporation 2019-July-23: CRS inspection and safety audit for initial run. But, Fire department delayed the NOC. 2019-July-30: Opening rescheduled on September. Smart Card released. Employees of Metro Railway, Kolkata being trained by Kolkata Metro Rail Corporation. 2019-August-02: CRS nod given, with 3 month validity of the clearance. 2019-August-12: India's deepest metro station, Howrah (30m) finishes structural construction. It took 17 months. 2019-August-21: Trial till Sealdah crossover and 7-day mock trial started. 2019-September-01: Tunnel boring machine Chandi hits an aquifer causing massive soil settlement. Multiple buildings damaged, hundreds had to be moved to hotels 2019-October: By the mid of the month, the land was stabled by grouting and no more subsidence recorded. High Court ordered to stop tunneling, till further notice. 2019-October-30: First round of service trials started. 2019 October: The first phase of this line was scheduled to start its first commercial run on 24 October, the same day when the first metro in India Kolkata Metro Line 1 was inaugurated in 1984 2019-October-24: But the date was postponed to 7 November for some technical reasons. 2019-October-30: Second round of service trials started. 2019 November-8: The Metro Authority was also unable to start its inaugural run on 7 November also. Failure drill started and performed till 18 November. 2019-November-26: Initial CRS deadline expired. 3 months grace period given. Valid till 29 February 2020. 2019-December: New opening date planned, i.e. December end. But, it is missed again. 2020-January-07: High Court asks Railways to file report on resuming East- West Metro tunneling work, that was stopped after Bowbazar mishap. 2020-January-28: 2022 is the revised deadline of the entire corridor. 2020-February-03: Last group of 2 families moved to new flats from hotel after the Bowbazar mishap. Final inauguration date announced. Rail Minister to flag off services on 13 February. 2020-February-11: Last trails, known as 'time-table trials' conducted. High Court gives nod to resume construction in Bowbazar area. 2020-February-13: First phase from Salt Lake Sector V to IFA Salt Lake Stadium inaugurated. 2020-February-14: Commercial services start. 2020-February-28: Tunneling resumed in Bowbazar area, and cracks redevelop in buildings. 2020-March: All operations and constructions stopped due to country-wide coronavirus lockdown. 2020-June-18: IFA Salt Lake Stadium to Phoolbagan section gets CRS nod. 2020-August-10: India's deepest evacuation shaft on Strand Road gets completed. 2020-October-2: the