Possible Clues:

• "One of --- days ..."
• Faulkner's '___ Thirteen'
• '___ Words' (2005 Natasha Bedingifeld hit)
• 1995 Bon Jovi album '___ Days'
• "We hold ___ truths to be self-evident ..."
• '___ Foolish Things' (1936 hit)
• 'Kids -- days!'
• ''We hold ___ truths . . .''
• ''___ are the times ...'' (Thomas Paine quote)
• "We hold --- truths to be ..."