When the rent was paid is completely irrelevant. The property was rented "the whole year". Every single day of it. Period. End of story. Even if the renter stopped paying rent in say, Oct of 2019 and you ended up evicting them in say Jan of 2020, it does not change the fact the property was rented the entire year. The only "fact" that changes is the amount of rental income actually received in 2019, and that's it.
