用Golang计算某时刻前n秒的时间

deltatime.go

package utils

import(
  "fmt"
  "time"
)

func SubIntervalTime(interval int64) string {
    t0 := time.Now()
    fmt.Println("t0:", t0.Format("2006-01-02 15:04:05"))
    delta := t0.Unix() - interval
    fmt.Println("interval:", interval)
    t := time.Unix(delta, 0)
    fmt.Println(t.Format("2006-01-02 15:04:05"))
    return ""
}