package main

import (
	"fmt"
	"time"
)

func main() {
	t1 := time.Date(2026, 6, 3, 18, 30, 0, 0, time.UTC)
	t2 := time.Date(2026, 6, 3, 18, 31, 0, 0, time.UTC)

	fmt.Println("t1 在 t2 前:", t1.Before(t2))
	fmt.Println("t2 在 t1 后:", t2.After(t1))
	fmt.Println("t1 == t2:", t1.Equal(t2))

	// 跨时区比较（同一时刻）
	utc, _ := time.LoadLocation("UTC")
	cn, _ := time.LoadLocation("Asia/Shanghai")

	timeUTC := time.Date(2026, 6, 3, 10, 0, 0, 0, utc)
	timeCN := time.Date(2026, 6, 3, 18, 0, 0, 0, cn)

	fmt.Println("是否同一时刻:", timeUTC.Equal(timeCN)) // true
}