Some weeks are shorter, some are longer, most are 7 days - all are important when it comes to setting your lineup for any given week.
For your game-counting convenience, the 24 weeks of the 2014-15 season:
Week 1: Oct. 8th - Oct. 17th
(10 day week)Week 2: Oct. 18th - Oct. 24th (7 days)
Week 3: Oct. 25th - Oct. 31st (7 days)
Week 4: Nov. 1st - Nov. 7th (7 days)
Week 5: Nov. 8th - Nov. 14th (7 days)
Week 6: Nov. 15th - Nov. 21st (7 days)
Week 7: Nov. 22nd - Nov. 28th (7 days)
Week 8: Nov. 29th - Dec. 5th (7 days)
Week 9: Dec. 6th - Dec. 12th (7 days)
Week 10: Dec. 13th - Dec. 23rd
(11 day week)Week 11: Dec. 27th - Jan. 2nd (7 days)
Week 12: Jan. 3rd - Jan. 9th (7 days)
Week 13: Jan. 10th - Jan. 16th (7 days)
Week 14: Jan. 17th - Jan. 21st
(5 day week)Week 15: Jan. 27th - Feb. 6th
(11 day week)Week 16: Feb. 7th - Feb. 13th (7 days)
Week 17: Feb. 14th - Feb. 20th (7 days)
Week 18: Feb. 21st - Feb. 27th (7 days)
Week 19: Feb. 28th - March 6th (7 days)
Week 20: March 7th - March 13th (7 days)
Week 21: March 14th - March 20th (7 days)
Week 22: March 21st - March 27th (7 days)
Week 23: March 28th - April 3rd (7 days)
Week 24: April 4th - April 11th
(10 day week)