Client-side time-zone

Question

User1823730432 posted

Hi

I have client-side code that gets the client date(date-time)

 

And then use this to get time-zone information about the client and the server

 

    2 Public Function getTimeZone(ByVal value As Date) As String

    3 

    4         Dim unclearDate As Date = value

    5         Dim zone As String

    6         zone = (TimeZoneInfo.Local.DisplayName + unclearDate.ToString + IIf(TimeZoneInfo.Local.IsAmbiguousTime(unclearDate), "", " "))

7                            zone += "<br />"

8         zone += (TimeZoneInfo.Local.DisplayName + unclearDate.ToString +   IIf(TimeZoneInfo.Local.IsDaylightSavingTime(unclearDate), "", " "))

    9         zone += "<br />"

   10         If TimeZoneInfo.Local.IsAmbiguousTime(unclearDate) OrElse TimeZoneInfo.Local.IsDaylightSavingTime(unclearDate) Then

   11             zone += (unclearDate.ToString + TimeZoneInfo.Local.DisplayName)

   12         End If

   13 

   14 

   15         'Dim thisTime As Date = value

   16         'Dim zone As String

   17         'zone = IIf(TimeZoneInfo.Local.IsDaylightSavingTime(thisTime), TimeZoneInfo.Local.DaylightName, TimeZoneInfo.Local.StandardName) + thisTime.ToString

   18         'zone += ("   UTC Time: {0}" + TimeZoneInfo.ConvertTimeToUtc(thisTime.ToString, TimeZoneInfo.Local).ToString)

   19 

   20 

   21         Return zone

22                    End Function

 

On my computer I get

(GMT+10:00) Canberra, Melbourne, Sydney11/12/2009 3:33:26 PM <br />(GMT+10:00) Canberra, Melbourne, Sydney11/12/2009 3:33:26 PM<br />11/12/2009 3:33:26 PM(GMT+10:00) Canberra, Melbourne, Sydney

 

Sydney being my home town but when I publish this to the site I get

 

From the server I get

Client-Side Date: (GMT-08:00) Pacific Time (US & Canada)11/11/2009 12:55:46 PM <br />(GMT-08:00) Pacific Time (US & Canada)11/11/2009 12:55:46 PM <br />

Server Date:(GMT-08:00) Pacific Time (US & Canada)11/11/2009 5:57:42 PM <br />(GMT-08:00) Pacific Time (US & Canada)11/11/2009 5:57:42 PM <br />

 

Client-side is US & Canada as the client I would hope to see Canberra, Melbourne, Sydney and I suppose that the US & Canada is correct for the server?

 

Can anyone understand why the client-side information is correct

 

Answer 1

User-42918493 posted

http://forums.asp.net/p/1301780/2541432.aspx

Answer 2

User1823730432 posted

Thank you for your reply

From the information that you provided I think I have achieved this in my code

The client time is correct as I receive a email from the website when I post from the login button which tells me the correct time when I view the page from the website on my computer and I get a time for the server  that I believe is the utc for the sever zone

 

As I see it the utc is a latitude where Sydney Canberra and Melbourne are in the same latitude as china yet the code was able to display Australian Capital cities instead of china capital cities when I run the code on my server but the email displays us and canada from the website. the time and offset and daylight savings is correct.

I what to see the correct cities just like canada and the US share the same latitude but I what to see US if I have view the website from the US and not canada