There are a few ways of looking at that. The first 7 days were Friday 1st of January 2010 to Thursday 7th of January 2010. Another way it can be looked at is the week the 1st of January was in. So that would be Sunday the 27th of December 2009 to Saturday the 2nd of January 2010. Another way of looking at it is the first calendar week, which would be Sunday the 3rd of January 2010 to Saturday the 9th of January 2010. The first working week would be Monday the 4th of January 2010 to Friday the 8th of January 2010.
This was the first week of the year.
January 4, 2010 falls in the first week of the year.
The thirty-seventh week of the year 2010 fell between the dates September 13 - 19.
Week 47 in a calendar year will put you into the month of November. In 2010, week 47 falls between the dates 22 and 28 November.
The thirty-first week of the year 2011 falls between the dates July 25 - 31.
15th week of the year 2010 starts Sunday April 4 2010.
The forty-fifth week in the year 2010 fell between Monday November 8 and Sunday November 14.
The date of October 13, 2010 falls in the 41st week of the year.
Usually first week of April. This year April 4, 2010.
If you're referring to the calendar year 2010, the 18th week of the year will begin on Monday, May 3, 2010.
From November 19 to 25 in India. The World Interfaith Harmony Week proposed in 2010 falls on the first week of February of every year.
It is week 1.