What is 120 days ago?
120 days is 17 weeks and 1 day, so it fell on the day of the week 1 day before today's.
Yesterday is 1 day ago, so count back from today without counting today itself.
120 days is 17 weeks and 1 day, so it fell on the day of the week 1 day before today's.
Yesterday is 1 day ago, so count back from today without counting today itself.