@Mike414 , your residence is usually wherever you are domiciled on the last day of the year. So if you lived in US and then in August 10th, 2021 you landed in Canada and lived there ( and intended to live there for the foreseeable future ), then you would say that your tax home / address etc. is Canada. This is not used for anything else other than where IRS can contact you . Then in 2022 August 10th 2022, when you have met the physical presence test ( 11th August 2021 till 10th August 2022 --- TurboTax I think will accept 11th August because it does not count the last day just like the on-line "days in between" calculators ), then you file your 2021 return covering both the domestic earnings from Jan1st 2021 till 10th August 2021 and claim foreign earnings for the rest of the year.
Does this make sense ?
pk
