Related Clues:

• Fluctuating according to the time of year
• Like an Easter egg? In the main a boy will, ultimately
• Timely drink in old Indian city
• Not always available
• Exactly as scheduled
• Available periodically
• Like most berries and oysters
• A child wrapped in fur in the winter, perhaps
• Like farmers-market produce
• Not missing a beat
• Eg Christmas fastener broken by a young relative
• Band, very quiet otherwise, introducing piece of music at appropriate time
• Exactly as planned
• At the right time; not late
• Joins cause regularly, when expected