The Nikkei index of 225 issues rose slightly, up 0.38 percent.
At the end of the morning, the Nikkei index was down 407.84 points, or 1.1 percent.
The Nikkei index of 225 issues finished up 94.45 points, or less than 1 percent, to 25,976.02.
The Nikkei index was up 655.72 points, or 3.78 percent.
The Nikkei index of 225 issues closed up 199.92 points, or nearly 1 percent, at 20,791.68.
The Nikkei index of 225 issues fell 2.5 percent yesterday.
The Nikkei index of 225 issues lost 909.48 points, or 3.87 percent, to close at 22,585.63.
Over the last five months, the Nikkei index has risen 24 percent.
The Nikkei index of 225 issues ended up 886.27 points to 26,230.01.
The Nikkei index of 225 stocks is up 28 percent this year in local terms.