December 28, 2020 (Monday) to January 3, 2021 (Sunday)
Week 53 of 2020 runs from December 28, 2020 (Monday) to January 3, 2021 (Sunday). This is the 53th week of the year according to the ISO 8601 standard, in which weeks start on Monday.
Dec 28 is a Monday. It is the first day of Week 53 of 2020.
Jan 3 is a Sunday. It is the last day of Week 53 of 2020.
Dec 28 is in Week 53 of 2020 according to ISO 8601.
Jan 3 is in Week 53 of 2020 according to ISO 8601.
Week 53 of 2020 runs from December 28, 2020 to January 3, 2021.
Week 53 of 2020 starts on December 28, 2020, the 363th day of 2020.
Yes, all 7 days of Week 53 of 2020 fall within 2020.
2020 has 53 weeks according to ISO 8601.