Jesse Owen's Magic Hour
...came between 3.15pm and 4.00pm on 25 May 1935 at the Big Ten inter-collegiate championships at Ann Arbor, Michigan.
In spite of a strained back sustained while playing touch football, the athlete (who would go on to take four gold medals at the Berlin Olympics 14 months later) persuaded his coach Larry Snyder to let him run the 100 yards. In that event he equalled the world record of 9.4 seconds and in fact was probably under it as in those days timing was by hand and the judges rounded up the figure. In the next 60 minutes, Owens went on to set three more world records - the first time any athlete had set multiple world records in track and field events on the same day. Here's how it unfolded:
3.00pm - 100 yard dash - 9.4 seconds
3.29pm - long jump - 26ft 8.25 inches
3.40pm - 220 yards - 20.3 seconds
4.00pm - 220 yard hurdles - 22.6 seconds.
Owens' long jump record remains the longest standing men's world record of all time. It would not be broken until 12 August 1960.
Source: Fotheringham 2003 p 64.