Related Clues:

• Wine-bottle datum
• Annual period
• 52 weeks
• Wine-list datum
• Sommelier's datum
• Wine bottle figure
• 88 days, on Mercury
• Many a Roman numeral
• Sentencing unit
• Diary length, often
• Strangely, it's shorter than a day on Venus
• See 33 Across
• 1994 or 1876
• Wine industry reference point
• Twelve months