A strange phenomenon of my radio-controlled clock on the wall of my room still continues since the evening of January 20th that first happened at the 6:30 PM. It shows the right time on the hour and minute hand, however the second hand moves in the reverse wind. I'm really puzzled at that scene in my room. It often happens before a big quake in a region that the clock faces against. I cannot find how and why it happens, though it occurred just five to seven weeks fore the 311 great quake in the east Japan, and also before the April 2013 quake in a Kansai's Island. It is really strange a phenomenon on the clock.