strDate := time.Now().AddDate(0, 0, -4)
fmt.Println(strDate)
fmt.Println(strDate.String())
fmt.Println(time.Parse(time.RFC822, strDate.String()))

// Printing:
// 2018-01-14 16:57:32.635627 -0800 PST
// 2018-01-14 16:57:32.635627 -0800 PST
// 0001-01-01 00:00:00 +0000 UTC parsing time "2018-01-14 16:57:32.635627 -0800 PST" as "02 Jan 06 15:04 MST": cannot parse "18-01-14 16:57:32.635627 -0800 PST" as " "