To catch Rotom, go to that forest and go into the old house. Go to the top floor, and into the hallway with a bunch of rooms. Go into the room with a TV in it. (has to be around eight o' clock at night) and talk to the Tv. Then you battle Rotom.
In the Pokemon animated series, Professor Oak has a Rotom. Professor Oak caught his Rotom on Torom Island. Oak's Rotom is prominently featured in the Pokemon XY series.
there are no real days as to when you can catch rotom just go to the Old Chateau at night and look into the television and rotom will appear. i have caught it at night so it should work :3
You can get rotom by in the haunted house near eterna city and after 8pm and go to the one witch has the scary picture on and press A at the tv and you should get rotom. Rotom can be caught by a normal great or ultra ball
Use the Rotom you caught in diamond, pearl and platinum.
at night
8oclock at night
To get Rotom in Pokemon Platinum you must be in the machine at 8:00pm to 12:00pm on Fridays or Saturdays.
Answer:At night. In the old Chateau.
it is ....... rotom
Rotom comes out only at nighttime from the TV in the Old Chateau on Pokémon Diamond, Pearl and Platinum. You also need the National Pokedex for Rotom to appear.
Heat Rotom: T8A6EH7Wash Rotom: H8S3A5WFrost Rotom: 6TS8ORF Fan Rotom: 9N4A4F8Mow Rotom: 7W6O3M5
Well i don't think there is a rotom key because i beat the game and caught rotom,but if you want to know how i can tell you. You first go to eterna forest and enter the old chateau. when you do that ( you need cut) you enter a room inside and it shows a TV on you click that and it brings you to rotom to battle rotom is like level 24,25,29 i don't really remember but somewhere in the twenty's anyways i suggest you use great balls,dusk balls,or ultra balls. I hoped i helped!