So I changed my date, but rotom still isn't showing up after like 30 resets. So, uh...... does it change something? Or am I just unlucky and impatient lol
In Gen 6, if you later the time/date, all time based events are disabled for 24 hours. Since Rotom can only appear On Tuesday and you altered the date, this is why. Source: https://gamefaqs.gamespot.com/boards/696959-pokemon-x/67495161