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Automatically determine browser time zone?

Posted on 2006-04-12
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Last Modified: 2006-11-18
I'm developing an application that will be used worldwide.  I think I need to handle and store all dates on the server in GMT time, so I can use TimeZone.setDefault() to set all times to "GMT".  Is that the best approach?  If so, then so far, so good.  

Now, how do I display dates and times on a JSP page in the user's time zone?  I have read up on <fmt:formatDate> and the various time zone tags, but they all assume that I give them the time zone to use.  I don't know what time zone the user is in.  Isn't that something that can be determined by the browser?

Also, when the user inputs a date without a time into a JSP form, how do I convert that back to GMT if I don't know the user's time zone?
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Question by:GaryW021199
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a122178 earned 1000 total points
ID: 16449251
I believe the question is server time vs client time. Since that JSP is the server-side web server, you cannot  determine the Client time from JSP. Remember that the JSP compiled in the server not the client browser. What I suggest to do is to use javascript to pass the client time to the server from HTML form submit.

http://javascript.about.com/library/bltime2.htm
http://www.tizag.com/javascriptT/javascriptdate.php

Hope it helps.

Cheers!

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