Complex sentence: The 2015--16 season is Reading's 145th year in their existence and third consecutive season in the Championship, and covers the period from 1 July 2015 to 30 June 2016.
Split into simpler sentences: The 2015--16 season is Reading's 145th year in their existence and third consecutive season in the Championship. The season covers the period from 1 July 2015 to 30 June 2016.