Related Clues:

• 365-day periods, roughly
• 1776 and 2001, e.g.: Abbr
• Calendar spans: Abbr
• Mos. turn into them
• 52-wk. periods
• Long time, for short
• Jr. and sr
• Timeline nos
• Age abbr
• 1949 and 2004, abbr
• They take months to complete (Abbr.)
• Abbr. before 'truly'
• Era divisions: Abbr
• Decade divs
• Cent. fractions