Since there is no such date as September 31, 2010, this question is impossible to answer. If the date wanted was September 30, then, including the start and end dates in the calculation, there are 273 days between the two dates.
86 weeks and 1 day.
Between January 1st 2010 and May 1st 2010 there are 121 days. There are 12.7 weeks between January and May of 2010.
There are 42 weeks between January 4 and November 1, 2010.
If you mean to ask what number of weeks are between the start of January 2010 and the start of July 2010 then the answer is 26
34 weeks and 5 days.
Between January 1, 2010 and August 1, 2010 there were 30 weeks and 2 days.
There are 26 weeks between January 1, 2010 and July 1, 2010.
How many weeks between September 27, 2010 and June 30, 2011
19 weeks.
There are 48 weeks and 6 days between January 1 2010 and December 9 2010.
Between January 1 and November 1, 2010 there were 43 weeks and 2 days.
A little over 97 weeks between January 28 2009 and December 12 2010.