Complex sentence: In 2011, daylight saving time began on March 13 and ended on November 6; in 2012, it will begin on March 11 and end on November 4; in 2013, it will begin on March 10 and end on November 3.
Split into simpler sentences: In 2011, daylight saving time began on March 13 and ended on November 6. In 2013, it will begin on March 10 and end on November 3.