Convert from one timezone to another in Go.

timezones.go

package main

import (
	"fmt"
	"time"
)

// tsConvert convert timestamp in "YYYY-MM-DDTHH:MM" format from one timezone to another
func tsConvert(ts string, fromTZ string, toTZ string) (string, error) {
	la, _ := time.LoadLocation(fromTZ)
	jeru, _ := time.LoadLocation(toTZ)

	// clean the input
	ts = fmt.Sprintf("%s:00", ts)

	// parse timestamp in source timezone
	laT, _ := time.ParseInLocation("2006-01-02T15:04:05", ts, la)

	// time in destination timezone
	jeruT := laT.In(jeru)

	// return destination time in "YYYY-MM-DDTHH:MM:SS" format
	return jeruT.Format("2006-01-02T15:04:05"), nil
}

func main() {
	ts := "2021-03-08T19:12"
	out, err := tsConvert(ts, "America/Los_Angeles", "Asia/Jerusalem")
	if err != nil {
		fmt.Printf("error: %s", err)
		return
	}

	fmt.Printf("out: %s", out)
}