package main

import "fmt"
import "time"

func main() {
    for year := 2008; year <= 2121; year++ {
        if time.Date(year, 12, 25, 0, 0, 0, 0, time.UTC).Weekday() ==
            time.Sunday {
            fmt.Printf("25 December%d is Sunday\n", year)
        }
    }
}