Related Clues:

• It has 366 days
• They happen once in four
• It contains an extra day
• When the lady may traditionally propose
• Period with an extra day
• The longest period of 12 months
• They happen once in every four
• 'They happen once in every four (4,5)'
• Springtime does not come every time
• Bound to have time for one in four
• That's bound to be one in four in time
• It's bound to be like that twenty-five percent of the time
• They're bound to be one in aforetime, by the sound of it
• Time to 8 across a little longer than most
• It's bound to be one in four then