If I could, when I dx, other CBS stations are 5 or 7 seconds ahead of WBBM. Years ago, on a message board I pointed this out. IE: "Time at the tone is..." and I was called everything in the book, for being too picky. Well, I guess I still am. (You would not set your watch to that.)

Correct time, if you want to pass the time:
303-499-7111 to get to WWV. "Time Radio WWV"