GMT Time Difference

[Richard]

Hi,
Is there any way to get the time difference between Central(US) and GMT in
vb.net.
I'll appreciate your help/suggestion.

Thanks
RC

 

[Ray Cassick]

I would assume that all you needed to do was add back the time that Central
time was behind GMT.

Central time is GMT-6 hours.

Just take your current time and add back 6 hours to get to GMT.

 

[Guest]

That will work but be sure to check for daylight savings time and adjust
accordingly (GMT - 7)

 

[Jay B. Harlow [MVP - Outlook]]

Richard,
DateTime.Now will return the "current" time based on your time zone.

DateTime.ToUniversalTime will return GMT time.

You can subtract the two values to get the difference...

Dim now As DateTime = DateTime.Now
Dim nowGMT As DateTime = now.ToUniversalTime()
Dim diff As TimeSpan = now.Subtract(nowGMT)
Debug.WriteLine(diff, "diff")

Alternatively you could use the various properties of System.TimeZone:

Dim time As DateTime = DateTime.Now

Dim tz As TimeZone = TimeZone.CurrentTimeZone

With tz
Debug.WriteLine(.DaylightName, "daylight name")
Debug.WriteLine(.StandardName, "standard name")
Debug.WriteLine(.GetDaylightChanges(time.Year), "daylight
changes")
Debug.WriteLine(.GetUtcOffset(time), "utc offset")
Debug.WriteLine(.IsDaylightSavingTime(time), "daylight saving
time")
End With

Hope this helps
Jay