Comment by gmiller123456

They are useful for ordinary people. Without them, at some point in the future people would go to work at 8am at sunset and go to bed at sunrise. Leap seconds are a way for everyone to agree to shift their schedules by 1 second to stay in sync with solar time. It's subtle enough that most people don't even know they exist, nor will it have an effect on most systems. Larger jumps would be much more difficult to ignore, and smaller jumps would be more frequent.