package main
import (
"fmt"
"time"
)
// ---------------------------------------------------------
// Function: daysUntilChristmas
// Purpose : Calculate how many days remain until Christmas.
// ---------------------------------------------------------
func daysUntilChristmas() int {
// Get today's date from the system
today := time.Now()
// Extract the current year
year := today.Year()
// Build a date for Christmas of the current year
// December = month 12 (Go uses 1–12)
christmas := time.Date(year, time.December, 25, 0, 0, 0, 0, today.Location())
// If Christmas already passed this year, calculate for next year
if today.After(christmas) {
christmas = time.Date(year+1, time.December, 25, 0, 0, 0, 0, today.Location())
}
// Calculate difference in days between today and Christmas
diff := christmas.Sub(today)
days := int(diff.Hours() / 24)
return days
}
func main() {
days := daysUntilChristmas()
fmt.Println("Days until Christmas:", days)
}
/*
run:
Days until Christmas: 209
*/
