Related Clues:

• Decem-ber 24 and 31
• Party nights
• One group of numbers to pick
• Levels (out)
• When to call, in some ads
• Smooths (out)
• Days before holidays
• 12/24 and 31
• Preceders of special days
• Certain celebration times
• Nights prior
• Holiday precursors
• 50-50
• They're at odds with odds
• Leading periods