Has Time Dilation Been Proven?

Physicists have verified a key prediction of Albert Einstein's special theory of relativity with unprecedented accuracy. Experiments at a particle accelerator in Germany confirm that time moves slower for a moving clock than for a stationary one.

Does time dilation exist?

Unlike the Twin Paradox, time dilation isn't a thought experiment or a hypothetical concept––it's real. ... The relative motion actually had a measurable impact and created a time difference between the two clocks.

Is time dilation real or apparent?

Time Dilation is real insofar as it tells us the rate at which things happen in one reference frame relative to another. However, it is based on clock time, which is virtual. Real time doesn't, and never will vary. Things can still happen at different rates in different reference frames measured against real time.