Q. Which year has 54 Sundays

Any year that begins on a Sunday will have 53 Sundays, not 54, since a regular 365-day year contains exactly 52 weeks plus one day, and a leap year contains 52 weeks plus two days. If a regular year starts on a Sunday, that extra day will also be a Sunday, giving the year its 53rd Sunday. A leap year that begins on a Saturday or Sunday will have 53 Sundays, since the two extra days beyond 52 complete weeks will include at least one Sunday.

It's mathematically impossible for any year to have 54 Sundays because even a leap year has only 366 days, which equals 52 weeks and two days—giving a maximum of 53 occurrences of any particular weekday. The confusion about 54 Sundays may arise from misunderstanding how weeks align within calendar years or from counting Sundays that span two different calendar years. For practical planning purposes, knowing that some years have 53 weekends rather than 52 helps businesses anticipate sales patterns, plan payroll for weekly employees, and schedule events that depend on weekend availability. The specific years with 53 Sundays follow predictable patterns based on whether they're leap years and which day of the week they begin on.