Ten weeks ago from today, February 25, 2014 it was December 24, 2013.
The day of the week 10 weeks ago was the same day of the week that it is today.
To find the date 80 weeks ago from today, you would subtract 560 days (since 80 weeks x 7 days/week = 560 days) from today's date. If today is October 23, 2023, then 80 weeks ago would be June 10, 2022.
To find the date 79 weeks ago, you would subtract 79 weeks from the current date. If today is June 1, 2021, the date 79 weeks ago would be February 10, 2020.
That would depend entirely on the day you asked the question.
To calculate the date 35 weeks ago from today, you can subtract 35 weeks (which is 245 days) from today's date. If today is October 5, 2023, then 35 weeks ago would be January 12, 2023.
To find the date 51 weeks ago from today, you would subtract 51 weeks (or 357 days) from today's date. If today is October 4, 2023, then 51 weeks ago would be October 4, 2022.
To find the date 92 weeks ago from today, you would subtract 92 weeks (or 644 days) from today's date. If today is October 4, 2023, then 92 weeks ago would be approximately January 3, 2022.
To find the date that was 13 weeks ago from today's date, you would subtract 13 weeks from today's date. If today's date is August 12th, 2021, then 13 weeks ago would be May 13th, 2021.
For the date October 3rd, ten weeks ago would have been July 25th. (This answer would depend, obviously, on what day the question was asked.)
To find the date 46 weeks ago from today, you would subtract 46 weeks from the current date. Since today is October 6, 2023, 46 weeks ago would be January 13, 2023.
To find the date 29 weeks ago from today, you would count back 29 weeks, which is 203 days. If today is October 3, 2023, then 29 weeks ago would be February 7, 2023.
To determine the date three weeks ago from today, simply subtract 21 days from the current date. If today is, for example, October 10, 2023, then three weeks ago would be September 19, 2023. You can adjust the starting date accordingly to find the exact date.