'1时间转时间戳---
Dim BasicTime As New Date(1970, 1, 1, 8, 0, 0)
Dim NowTime As Date = Date.Now '当前时间
Dim TimeStamp As Long = CLng((NowTime - BasicTime).TotalSeconds())
'2时间戳转时间---
Dim BasicTime As New Date(1970, 1, 1, 8, 0, 0)
Dim TimeStamp As Long = 1551938556 '时间戳
Dim NowTime = BasicTime.AddSeconds(TimeStamp)