Go言語を使って時刻が昨日かどうかを判断する方法は何ですか?

package main

import (
    "fmt"
    "time"
)

func isYesterday(t time.Time) bool {
    yesterday := time.Now().Add(-24 * time.Hour)
    year, month, day := yesterday.Date()
    yesterdayStart := time.Date(year, month, day, 0, 0, 0, 0, yesterday.Location())
    yesterdayEnd := time.Date(year, month, day, 23, 59, 59, 999999999, yesterday.Location())

    return t.After(yesterdayStart) && t.Before(yesterdayEnd)
}

func main() {
    t := time.Date(2022, 1, 20, 12, 0, 0, 0, time.UTC)
    if isYesterday(t) {
        fmt.Println("输入的时间是昨天")
    } else {
        fmt.Println("输入的时间不是昨天")
    }
}