获取给定的时区时间戳

Question

I am playing around with timezone and noticed something wierd.

I am currently in the BST timezone which is an hour ahead of GMT.

        now := time.Now()
        location, _ := time.LoadLocation("Atlantic/Cape_Verde")
        timeAtZone := now.In(location)
        fmt.Println(timeAtZone)
        timestamp = timeAtZone.Unix()
        fmt.Println(timestamp)
        fmt.Println(now.Add(-time.Hour).UTC().Unix())
        fmt.Println(now.UTC().Unix())

You will notice that the timestamp is that of BST my current timezone.

How do I get the timestamp of GMT???

http://play.golang.org/p/oq0IRYa0h7

Answer 1

Unix time is absolute. There is no "BST Unix time." There is no "Atlantic/Cape_Verde" Unix time." There is only Unix time. It is the number of seconds since a specific moment (00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970, not counting leap seconds).

Time zones are related to the representation of time, not time itself. It is the same moment for you as it is for me, wherever we are in the world (leaving Einstein aside for the moment). We just happen to call that moment different things. Setting the location on a *Time just indicates how you would like to display the time. So if by "timestamp" you mean "string representing the time," you can get the UTC timestamp with time.Now().UTC().String().