Possible Clues:

• Christmas (informal)
• American uncle wrong to return now, in short
• Yuletide abbr
• Time to give women with children to support the vote
• When Mother's prodded by son and Father appears, see 1 Diagonal
• Carol time, briefly
• Big day in Dec
• December 25, informally
• Yule, briefly
• Kiss by mistletoe's primarily when?