time.go

package main

import (
	"fmt"
	"time"
)

func main() {
	const value = "2015-08-04 14:33:21.89115181 -0600 MDT"
	const layout = "2006-01-02 15:04:05.999999999 -0700 MST"

	t, err := time.Parse(layout, value)
	if err != nil {
		panic(err)
	}

	fmt.Println(t.String())
}