How to get seconds since epoch (1/1/1970) in VBA?
Question
How can I get seconds since epoch (1/1/1970) in VBA?
Solution
How about:
datediff("s",#1970/1/1#,now())
OTHER TIPS
This should run faster than the DateDiff solution:
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
Here's a solution: http://vbcity.com/forums/t/5084.aspx
Function UnixTime() As Variant
'The first parameter determines how the
' difference will be measured in i.e. "S" for seconds
UnixTime = DateDiff("S", "1/1/1970", Now())
End Function
I tryed modify it for my timezone and take into account DST. Timezones can have diferent settings when it changes.
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
DateDiff("s", "01/01/1970 00:00:00", Now())
& Format(Now(), "ms")
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