2011 was the same in Ireland as any other part of the world. Having 365 days, that is 52 weeks and 1 day. In terms of measuring Sunday to Saturday weeks, or part thereof, then there were 53. Taking week 1 as Sunday 26th December 2010 through to Saturday 1st January 2011 and week 53 as Sunday 25th December 2011 through to Saturday 31st December 2011.
There are 4 weeks in January 2011
June 2011 contained 4.29 weeks.
That would be 16 weeks.
8.6 weeks
39 weeks
Exactly four weeks.
21 weeks and 4 days.
8 weeks and 1 day.
30 weeks and 3 days.
A little over 7 weeks to 1st Jan 2011.
11 weeks and 5 days.
8 weeks and 2 days.