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假设我有本地太平洋时间(UTC-8)Excel值。例如41656.67297
是17 January 2014 4:09 PM
。我无法控制这个值。VBA当地时区调整
我想调整相对于用户本地时间的给定值。比如说,都柏林的某个人正在使用Excel工作簿。我想调整给定的数字并在当地时间18 January 2014 12:09 AM
中显示。是否有任何内置的Excel功能可以使这种流畅?
假设我有本地太平洋时间(UTC-8)Excel值。例如41656.67297
是17 January 2014 4:09 PM
。我无法控制这个值。VBA当地时区调整
我想调整相对于用户本地时间的给定值。比如说,都柏林的某个人正在使用Excel工作簿。我想调整给定的数字并在当地时间18 January 2014 12:09 AM
中显示。是否有任何内置的Excel功能可以使这种流畅?
VBA本身不提供此选项,但有一个Windows API可让您执行所需的操作。 This article描述如何操作,here是GetTimeZoneInformation
上的MSDN页面。
从CPearson页面,使这些声明第一:
Option Explicit
Private Type SYSTEMTIME
wYear As Integer
wMonth As Integer
wDayOfWeek As Integer
wDay As Integer
wHour As Integer
wMinute As Integer
wSecond As Integer
wMilliseconds As Integer
End Type
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' NOTE: If you are using the Windows WinAPI Viewer Add-In to get
' function declarations, not that there is an error in the
' TIME_ZONE_INFORMATION structure. It defines StandardName and
' DaylightName As 32. This is fine if you have an Option Base
' directive to set the lower bound of arrays to 1. However, if
' your Option Base directive is set to 0 or you have no
' Option Base diretive, the code won't work. Instead,
' change the (32) to (0 To 31).
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Private Type TIME_ZONE_INFORMATION
Bias As Long
StandardName(0 To 31) As Integer
StandardDate As SYSTEMTIME
StandardBias As Long
DaylightName(0 TO 31) As Integer
DaylightDate As SYSTEMTIME
DaylightBias As Long
End Type
''''''''''''''''''''''''''''''''''''''''''''''
' These give symbolic names to the time zone
' values returned by GetTimeZoneInformation .
''''''''''''''''''''''''''''''''''''''''''''''
Private Enum TIME_ZONE
TIME_ZONE_ID_INVALID = 0 ' Cannot determine DST
TIME_ZONE_STANDARD = 1 ' Standard Time, not Daylight
TIME_ZONE_DAYLIGHT = 2 ' Daylight Time, not Standard
End Enum
Private Declare Function GetTimeZoneInformation Lib "kernel32" _
(lpTimeZoneInformation As TIME_ZONE_INFORMATION) As Long
Private Declare Sub GetSystemTime Lib "kernel32" _
(lpSystemTime As SYSTEMTIME)
那么这个函数会发现用户的本地时间和GMT偏移:
Function LocalOffsetFromGMT(Optional AsHours As Boolean = False, _
Optional AdjustForDST As Boolean = False) As Double
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' LocalOffsetFromGMT
' This returns the amount of time in minutes (if AsHours is omitted or
' false) or hours (if AsHours is True) that should be *added* to the
' local time to get GMT. If AdjustForDST is missing or false,
' the unmodified difference is returned. (e.g., Kansas City to London
' is 6 hours normally, 5 hours during DST. If AdjustForDST is False,
' the resultif 6 hours. If AdjustForDST is True, the result is 5 hours
' if DST is in effect.)
' Note that the return type of the function is a Double not a Long. This
' is to accomodate those few places in the world where the GMT offset
' is not an even hour, such as Newfoundland, Canada, where the offset is
' on a half-hour displacement.
'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Dim TBias As Long
Dim TZI As TIME_ZONE_INFORMATION
Dim DST As TIME_ZONE
DST = GetTimeZoneInformation(TZI)
If DST = TIME_ZONE_DAYLIGHT Then
If AdjustForDST = True Then
TBias = TZI.Bias + TZI.DaylightBias
Else
TBias = TZI.Bias
End If
Else
TBias = TZI.Bias
End If
If AsHours = True Then
TBias = TBias/60
End If
LocalOffsetFromGMT = TBias
End Function
您可以测试代码:
MsgBox (LocalOffsetFromGMT())
然后将此偏移量添加到原始时间,您可以执行以下操作:
OriginalTime + TIME(LocalOffsetFromGMT(True, True), 0, 0)
谢谢,我刚刚提交了一些编辑,以包含函数前所需的必需声明以及我用来测试的代码行。我测试了几个时区,似乎工作正常! –