1227 weeks.
7067 days between 28 August 1990 and 2 January 2010.
39 weeks.
52
From the end of April 2013 to the start of January 2014 is 40.3 weeks, approx.
There are 17 weeks and 3 days between September 1 and January 1.
A little more than 1025 weeks since July 28th 1990.
1/9 to 1/31 is three weeks. Since there are 52 weeks in a year, 1/31 to the following 1/9 is 49 weeks.
7067 days between 28 August 1990 and 2 January 2010.
The 31st of January has been on a Monday four times since 1990. Those years were 1994, 2000, 2005 and 2011. The next time will be in 2022.
There are 4 weeks in January 2011
52 weeks and 1 day.
Approximately 36 weeks
39 weeks.
44 weeks
4 weeks and 2 days.
52 weeks and 1 day.
On the 24th of August 2011, when the question was asked, 320 weeks and 1 day had passed since the 5th of July 2005. On the 3rd of January 2015, when the question was answered, 495 weeks and 4 days had passed.