there are never eevnts in Ireland, there have been at most two in Europe since they began. Best bet is America :P
events
The Salac Berry is a rare berry in Pokemon Diamond. It can only be obtained from distribution events that had legendary Pokemon holding them. These events are no longer being ran or support for Pokemon Diamond.
Events are the Nintendo Wi-Fi connection events held by Nintendo. You have to connect to Wi-Fi in order to find out if there is an event. These events usually have rare Pokemon or legendary Pokemon you normally cannot receive in the game.
you can't get jirachi in emerald, only by Nintendo events, they give out special items that helps you get rare Pokemon.
you cannot catch wild rare Pokemon in xd but you can catch the trainers rare Pokemon, if they are "inpure"
If the Pokemon is extremely uncommon, then it is rare.
Rare Pokemon? I suppose, Ledgendarys are rare, Palkia. Mesprit, Uxie, Azelf. Altaria are kinda rare, Garchomp are rare. -Hope I helped
A rare Pokemon is on a honey tree when you see the tree shaking. (the more it shakes the rare the Pokemon )
its is super RARE
Only if you migrate rare Pokemon
You can get rare candies in pokemon yellow