获取当前时区时间～
let zone = TimeZone.current
let interval = zone.secondsFromGMT()
let localDate = Date().addingTimeInterval(TimeInterval(interval))
// 获取当前时间戳
let stamp = Int(localDate.timeIntervalSince1970) * 1000
// 格林威治时间 + 时区时间戳偏移值 得到现在的时间
let nowDate = Date.init(timeIntervalSince1970: TimeInterval(stamp/1000))
