Clocks STOP,then mysteriously RESET,and START again!

this is the first time anything like this has happened in my home.i woke up a few mornings ago and my battery operated bedroom clock had stopped at 5:30am. I went to kitchen and the kitchen battery wall clock had also stopped at 5:30am.(it was actually 8:30am..a working electrical clock informed me) i thought it was very odd that both battery clocks would stop at the same exact time but the story doesnt end there!i had not gotten around to buying batteries yet(2 days later)and last night when i looked at my bedroom clock, it was not only going again..the most amazing thing is time was even set correctly! i then go to kitchen clock and that clock is going too, also set at correct time.!no logical explanation.very weird. has anyone out there ever experienced such a thing? i would welcome any comments. thank you