Nearly every stock with a change of 50 cents or more that I check a chart on has a leap of something around $1 between those two times. On either side of those time markers, the trading graphs have the normal small bumps and nudges, but between them, the graphs all show unusual cliff-like characteristics.
If you look at the movers in both directions, there are MANY more stocks that are up and down 90 cents or more than is normal.