如何在VBA中获得自epoch(1/1/1970)以来的秒数?
我怎样才能从年的epoch(1970年1月1日)开始获得秒数?这里有一个解决方案: 那么:如何在VBA中获得自epoch(1/1/1970)以来的秒数?,vba,time,epoch,seconds,Vba,Time,Epoch,Seconds,我怎样才能从年的epoch(1970年1月1日)开始获得秒数?这里有一个解决方案: 那么: datediff("s",#1970/1/1#,now()) 应比DateDiff解决方案运行更快: Private Function Long2Date(lngDate As Long) As Date Long2Date = lngDate / 86400# + #1/1/1970# End Function Private Function Date2Long(dtmDate As Da
datediff("s",#1970/1/1#,now())
应比DateDiff解决方案运行更快:
Private Function Long2Date(lngDate As Long) As Date
Long2Date = lngDate / 86400# + #1/1/1970#
End Function
Private Function Date2Long(dtmDate As Date) As Long
Date2Long = (dtmDate - #1/1/1970#) * 86400
End Function
我试着修改我的时区和 考虑DST。时区更改时可以有不同的设置
Function Epoch2Date(lngDate As Long) As Date
'transfer to date
Epoch2Date = lngDate / 86400# + #1/1/1970#
'check if it is summer time
If IsDST(Epoch2Date) = False Then
'here you can use diferent values depend on time zone
Epoch2Date = Epoch2Date - 0.041666667
Else
Epoch2Date = Epoch2Date - 0.0833333333333333
End If
End Function
Public Function IsDST(ByVal d0 As Date) As Boolean
IsDST = d0 >= NextSun("24.3." & Year(d0) & " 01:59:59") And d0 < NextSun("24.10." & Year(d0) & " 01:59:59")
End Function
Private Function NextSun(d1 As Date) As Date
'if 24.3 or 24.10 is sunday returns 31.3 or 31.10
If Weekday(d1, vbMonday) = 7 Then
NextSun = d1 + 7
Else
'if not return nearest sunday
NextSun = d1 + 7 - Weekday(d1, vbMonday)
End If
End Function
函数Epoch2Date(长度为lngDate)作为日期
“转移到日期
Epoch2Date=lngDate/86400#+#1/1/1970#
“看看是不是夏天
如果IsDST(Epoch2Date)=False,则
'在这里,您可以根据时区使用不同的值
Epoch2Date=Epoch2Date-0.041666667
其他的
Epoch2Date=Epoch2Date-0.0833333
如果结束
端函数
公共函数IsDST(ByVal d0作为日期)为布尔值
IsDST=d0>=NextSun(“24.3.”年(d0)和“01:59:59”)和d0DateDiff(“s”,“01/01/1970 00:00:00”,Now())
&格式(Now(),“ms”)
这里有一个在UTC返回的解决方案,因为DateDiff one根据您的时区返回一个值:
Private Function UnixEpoch() As Long
Set ScriptEngine = CreateObject("MSScriptControl.ScriptControl")
ScriptEngine.Language = "JScript"
ScriptEngine.AddCode "function unixTime() { var d = new Date(); var s = Math.round(d.getTime() / 1000); return s; } "
UnixEpoch = ScriptEngine.Run("unixTime")
End Function
在JScript上运行它可以解决VBA中必须解决的时区问题。是的,我把它改成了这个datediff(“s”),1970/1/1,dateadd(“h”,5,now())
。。。但不确定DST运行时我会做什么。因此没有办法自动处理到UTC的转换?UnixTimeStamp=DateDiff(“s”,“01/01/1970 00:00:00”,Now())&Format(Now(),“ms”)将为您提供UnixTimeStamp as 1537362312758
Private Function UnixEpoch() As Long
Set ScriptEngine = CreateObject("MSScriptControl.ScriptControl")
ScriptEngine.Language = "JScript"
ScriptEngine.AddCode "function unixTime() { var d = new Date(); var s = Math.round(d.getTime() / 1000); return s; } "
UnixEpoch = ScriptEngine.Run("unixTime")
End Function