day before

package main

import (
    "fmt"
    "time"
)

func main() {
    fmt.Println("Hello World!")
    
    asd := time.Now().UTC().AddDate(0, 0, 1*-1)
    zxc := time.Now().UTC().AddDate(0, 0, -1)
    
    fmt.Println(asd)    
    fmt.Println(zxc)
}