This is a variable number. You need to state a start and/or end date or time.
To determine the date 11 weeks from today, you would add 77 days to the current date. If today is October 3, 2023, then 11 weeks from today would be December 19, 2023.
Exactly 11 weeks after December 20, 2011 is March 6, 2012.
In any given year, adding 11 weeks to March 23, gives June 8.
The 14th of January 2013.
March 3 2011 is the date 11 weeks before May 19 2011.
Today is Monday, May 19, 2014. If you subtract 27 weeks from today's date, or 189 days, the date would be Monday, November 11, 2013.
September 14 2012 + 11*7 days = 30 November 2012.
To find the date 12 weeks ago from today, you would subtract 84 days (since there are 7 days in a week) from today's date. If today is October 3, 2023, then 12 weeks ago would be July 11, 2023.
As of today, the desi date in Pakistan is 3rd Safar 1445 AH according to the Islamic lunar calendar. The Islamic calendar is about 11 days shorter than the Gregorian calendar, so the corresponding Gregorian date will vary each year. The current month, Safar, is the second month in the Islamic calendar.
To calculate the date 11 weeks ago, you would go back 77 days from today. Assuming today is October 3, 2023, 11 weeks ago would be July 18, 2023.
49 weeks ago was approximately 11 months and 3 weeks ago from today.
Today is Sunday 4 April 2010. 75 weeks from now, the date will be Sunday 11 September 2011.