fmt.Println(umt.UnixMicro())
	t := time.UnixMicro(umt.UnixMicro()).UTC()
	fmt.Println(t)

	// Output:
	// 1257894000000000
	// 2009-11-10 23:00:00 +0000 UTC
}

func ExampleUnixMilli() {
	umt := time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)
	fmt.Println(umt.UnixMilli())
	t := time.UnixMilli(umt.UnixMilli()).UTC()
	fmt.Println(t)

	// Output:
	// 1257894000000