package main
import (
"fmt"
"time"
)
func main() {
now := time.Now()
fmt.Println(now)
var N int = 10
// func (t Time) Add(d Duration) Time
dt := now.Add(-time.Duration(N) * time.Second)
fmt.Println(dt)
}
/*
run:
2020-08-13 14:20:17.778135074 +0000 UTC m=+0.000080253
2020-08-13 14:20:07.778135074 +0000 UTC m=-9.999919747
*/