I want to complete the Sinnoh pokedex, but I have learned that you can only capture Drifloon on Fridays during the daytime at Valley Windworks. Is there any easier and quicker way to capture Drifloon, or at least find it so it is entered into the pokedex? Help will be appreciated where given. Thank you.
Yes, there a easier way, well sort of. Change your DS date to next Friday. Go to Valley Windworks and it should work. If not you can set it to next Thursday and wait a day. Hope I helped! :)
Source: Experince and to back it up: http://mycheats.1up.com/view/question/3136320/5484/1/pokemon_diamond_pearl_/nintendo_ds
Simply, no. You can see one in the 5th gym though.
in the 5th gym, if you answer all the questions incorrectly and enter the wrong doors, one of them has a Driftloon
Source, source and source