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Mini arc where Ash is supposed to be training for the Indigo Conference:
>Two 'prologue' episodes of sorts. The first is "It's Mr. Mime Time", in which Delia gets Mr Mime and its also the first night in which Ash, Misty, and Brock stay at the Ketchum residence. And the next day in "Showdown at the Po-ké Corral", Professor Oak explains there is two months until the indigo league conference so Ash should train. (For the sake of simplicity, an average month is about 30 days, so Ash now has 60 days ahead of him to train. Which is a total of 62 days when also factoring the two 'prologue' episodes that setup the routine.)
>During the two month training period Ash, Misty, and Brock live at the Ketchum residence for 48 more days (48/62)
>Ash sleeps on the floor on a futon in his own room as seen in both "Showdown at the Po-ké Corral" and "Make Room for Gloom".
>Misty sleeps in Ash's room on his actual bed as seen in "Make Room for Gloom".
>Brock is never shown for where he sleeps, could be the couch, could be Delia's bed.
>Ash is never shown to protest to Misty sleeping in his bed, nor is it ever shown that he was told by Delia to let Misty sleep in his bed.
>Brock is shown as early riser regularly when making Breakfast for the rest of the household, Ash is shown to be the one who sleeps in, Misty gets up earlier than Ash.
>The trio and Delia spend 3 days and 3 nights at a beach resort. 2 of those 3 days are covered in "The Evolution Solution" and "The Pi-Kahuna". (3/62)
>1 night is shown of the trio camping outside during "Lights, Camera, Quack-tion". (1/62)
>The Narrator states Ash only has 3 weeks left in "To Master the Onixpected".
>1 night is shown of the trio spent sleeping in an RV during "The Ancient Puzzle of Pokémopolis". (1/62)
>The trio officially leave the Ketchum residence at the beginning of the last week during "Bad to the Bone" to go to the Indigo Plateau. (7/62)
TL;DR: Misty got to sleep in Ash's bed at his house for 50 days.
