How to get the current timestamp in other timezones in Golang?

Question

I need to get the current time in different time-zones.

Currently I know that we can do the following:

t := time.Now()
fmt.Println("Location:", t.Location(), ":Time:", t)
utc, err := time.LoadLocation("America/New_York")
if err != nil {
    fmt.Println("err: ", err.Error())
}
fmt.Println("Location:", utc, ":Time:", t.In(utc))

The LoadLocation name is taken to be a location name corresponding to a file in the IANA Time Zone database, such as "America/New_York".

Is there a simpler way to get the current time, if the country name, or the GMT offset is given e.g +530 for India?

Edit: I would also want to support Day light savings.

Answer 1

//init the loc
loc, _ := time.LoadLocation("Asia/Shanghai")

//set timezone,  
now := time.Now().In(loc)

Answer 2

No, that is the best way. You can create your custom Location using FixedZone and use that custom location.

FixedZone returns a Location that always uses the given zone name and offset (seconds east of UTC).

Answer 3

I like this way

//init the loc
loc, _ := time.LoadLocation("Asia/Shanghai")

//set timezone,  
now := time.Now().In(loc)

Where can I find the name of the location?

You can see it on the zoneinfo.zip

some example

package _test

import (
    "fmt"
    "testing"
    "time"
)

func TestTime(t *testing.T) {
    myT := time.Date(2022, 4, 28, 14, 0, 0, 0, time.UTC)
    for _, d := range []struct {
        name     string
        expected string
    }{
        {"UTC", "2022-04-28 14:00:00 +0000 UTC"},
        {"America/Los_Angeles", "2022-04-28 07:00:00 -0700 PDT"},
        {"Asia/Tokyo", "2022-04-28 23:00:00 +0900 JST"},
        {"Asia/Taipei", "2022-04-28 22:00:00 +0800 CST"},
        {"Asia/Hong_Kong", "2022-04-28 22:00:00 +0800 HKT"},
        {"Asia/Shanghai", "2022-04-28 22:00:00 +0800 CST"},
    } {
        loc, _ := time.LoadLocation(d.name)
        if val := fmt.Sprintf("%s", myT.In(loc)); val != d.expected {
            fmt.Println(val)
            t.FailNow()
        }
    }
}