now := time.Now()
    currentYear,currentMonth,_ := now.Date()
    currentLocation := now.Location()

    firstOfMonth := time.Date(currentYear,1,currentLocation)
    lastOfMonth := firstOfMonth.AddDate(0,-1)

    fmt.Println(firstOfMonth.Unix())
    fmt.Println(lastOfMonth.Unix())
    
    layout := "2006-01-02 15:04:05"
    loc,_:= time.LoadLocation("Asia/Chongqing")
    zero_day,_ := time.ParseInLocation(layout,"1949-10-01 00:00:00",loc)