From noon on New Year's Eve to noon on New Year's Day. First posted on 2020-12-31/2021-01-01, and reposted on 2021-12-31/2022-01-01, 2022-12-31/2023-01-01, and 2023-12-31/2024-01-01 with some modifications (2023 and 2024 modifications being inserted according to the time indicated).
