How to Parse a Time String with a Specific Time Zone in Go?

Parsing Time with a Specific Time Zone

You can use time.ParseTime() to get a time struct from a string. It takes a layout string as an argument, which specifies the format of the input string. The layout string must match the format of the input string exactly.

If you need to parse a time string that includes a time zone, you can use time.ParseInLocation(). This function takes a layout string and a location as arguments. The location can be a time.Location value or a string representing a time zone name.

For example, the following code parses a time string that includes a time zone:

<code class="go">import (
    "fmt"
    "time"
)

func main() {
    const layout = "2006-01-02 15:04"
    const timeStr = "2012-07-09 05:02:00 +0000 CEST"

    t, err := time.ParseInLocation(layout, timeStr, time.Local)
    if err != nil {
        fmt.Println(err)
        return
    }

    fmt.Println(t)
}</code>

This code will print the following output:

2012-07-09 05:02:00 +0000 CEST

The time.ParseInLocation() function will parse the time string according to the layout string and the specified location. In this case, the layout string is "2006-01-02 15:04" and the location is "CEST". The time.ParseInLocation() function will return a time.Time value that represents the parsed time.

If you do not specify a location, the time.ParseInLocation() function will use the local time zone. This means that the parsed time will be converted to the local time zone.

You can avoid this by creating a time.Time value with the correct time and time zone:

<code class="go">import (
    "fmt"
    "time"
)

func main() {
    const layout = "2006-01-02 15:04"
    const timeStr = "2012-07-09 05:02:00"
    const timeZone = "CEST"

    pz, err := time.LoadLocation(timeZone)
    if err != nil {
        fmt.Println(err)
        return
    }

    t, err := time.Parse(layout, timeStr)
    if err != nil {
        fmt.Println(err)
        return
    }

    T := t.In(pz)

    fmt.Println(T)
}</code>

This code will print the following output:

2012-07-09 05:02:00 +0200 CEST

The output of this code shows the time in the correct time zone.

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