Golang playground

date.go

package main

import (
	"fmt"
	"time"
)

func main() {
	t := time.Now().UTC()
	fmt.Println("UTC")
	fmt.Println(t)
	fmt.Println(Format(t))

	l := "America/Fortaleza"
	t1, _ := TimeIn(t, l)
	fmt.Println(l)
	fmt.Println(t1)
	fmt.Println(Format(t1))

}

func Format(t time.Time) string {
	return t.Format("15:04:05")

}

func TimeIn(t time.Time, name string) (time.Time, error) {
	loc, err := time.LoadLocation(name)
	if err == nil {
		t = t.In(loc)
	}
	return t, err
}