convert AM/PM 12 hour to 24 hour to time using golang

convertTime24to12hour.go

package main

import (
    "bufio"
    "fmt"
    "io"
    "os"
    "strings"
    "time"
)

func timeConversion(s string) string {
    // layoutRead and layoutResult 
    // is format first read and final read result
  
    layoutRead := "03:04:05PM"
    layoutResult := "15:04:05"
    t, _ := time.Parse(layout, string(s))
    return t.Format(layoutResult)
}

func checkError(err error) {
    if err != nil {
        panic(err)
    }
}

func main() {
    checkError(err)
    result := timeConversion(s)
    fmt.Println(result)
}