There is no planet where time goes backwards.
Here's why:
* Time is relative: Einstein's theory of relativity tells us that time is not absolute. It's relative to the observer's speed and gravitational field.
* Time dilation: This means that time can pass at different rates for observers in different frames of reference. If you were moving at very high speeds or in a very strong gravitational field, time would pass slower for you relative to someone on Earth. However, this is still time moving forward, just at a different pace.
* No backwards flow: There is no known physical phenomenon that causes time to flow backwards. While it's a common trope in science fiction, it's not supported by our current understanding of physics.
So, while it's a cool idea, there's no planet where time moves backwards!