How do get Darkrai in Pokemon Diamond?

Answer 1

This is a multi-step process.1. Go to jubilife city with a Pokemon knowing surf.

2. Go to the far left of jubilife NOT where the GTS is, where the building with the flags is.

3. If you get to a green place surrounded by trees, water, rocks and there is a wooden bridge connected to a small green island with another wooden bridge not connected to anything, then go to the bridge not connected to anything and surf left.

4. After getting on to an island where there is a sailor and a boy next to tall grass then head southwest. (Toward the red thing)

5. After getting to canalave city then go north, across a drawbridge, south, talk to a sailor, and he'll tell you if you need to go to Iron island or fullmoon island (he should unless he only tells you Iron island or tells you to help his family, which I think is getting crescelia)

6. once your on fullmoon island, then go northeast into a forest with a crescent shaped pond and...

...A dark figure you should save in front of... ...Called Darkrai...

There were several Darkrai events all over the planet. If you missed these events the only way to get a Darkrai is by trading it with someone. Of course there are also cheating methods, but I don't like those so won't discuss that.