It is week 1.
January 1 2010 will be a Friday.
January 1 2010 was a Friday.
1 January 2010 will be a Friday.Janurary 1 2010 is a Friday.
January 1st will be in the first week of January.
The first week in January
Friday
This was the first week of the year.
Friday
Year 1 was a Saturday!
January 1st of year 1 was a Saturday. They didn't know it then.
The Ride - 2010 Bowl Week 1-8 was released on: USA: January 2011
This Week in Horror - 2010 Devil Be Gone 1-3 was released on: USA: 10 January 2011