As we seen in Interstellar movie Copper goes to a planet where he experienced time dilation which was 1 hour of staying on that planet will cost the 7 years on the earth. So, is there any planet or black hole where time will nearly behave like this? Because the planets in our solar system will show very little differences.
You can definitely scratch out any planets, as their gravitational field will not be strong enough. Even a very dense neutron star wouldn’t give much effect, as far as I know.
As for black holes, well, basically any black hole will give this effect. However, those are too far to reach with our current means.