A gap in time or other measurable value is, represented by a break in the middle of the signal as shown. Time is a concept that is both relative and local. Let's say you're correct, and time moves twice as fast today as it did yesterday, but what difference does it make? Your heart rate, as recorded by your wristwatch, would remain unchanged. The atomic clock would still measure 24 hours each day, and all light would have the same color (frequency). What precise measurable difference are you looking for?
