Passage: The last record of the power station's operation dates 14 August 1972, and is related to the movement opposing the political regime in government at the time. On 9 August, the high voltage lines that supplied Lisbon with electricity were sabotaged and the city was left without power. The Tejo Power Station was called upon for one week to overcome the problem and produce electricity to supply Lisbon's distribution network. The power station's former workers that had been summoned, some already retired, with all their knowledge and experience, got the Tejo Power Station working once again, feeding coal into boiler number 15 for the last time. 1 200 678 kWh were produced, a residual value that only represented one fifth of the daily consumption demands on the CRGE grid. That is the record that marks the final day of the Tejo Power Station. The noise and vibrations that characterised the operation of this power plant for several generations, were permanently stilled.

Question: The Tejo Power Station was last recorded to be running on what date?
14 August 1972