At the beginning of the film, the lighting equipment in the studio is fluorescent lamps (fluorescent lamps). The fluorescent lamp was invented by General Electric Company in 1938. The time in the film is 1935.
At the end of the film, in the scene where the king and the doctor prepare to give a speech, the two clocks in the room have different times. And the time on the fireplace stayed at 5:50, and there was no movement during the five minutes of the film.
At the end of the film, the speech should be at six o'clock in the evening. And Buckingham Palace faces northeast, judging from the shadow of the monument on the square, the shooting time is obviously in the morning. Because the southeast side of the monument is illuminated, while the southwest side facing Buckingham Palace is dark.
