how to detect client timezone?

Question

any ideas how to get client/request timezone in jsp?

Answer 1

Unfortunately this information is not passed in HTTP headers.

Usually you need cooperating JavaScript to fetch it for you.
Web is full of examples, here is one http://www.coderanch.com/t/486127/JSP/java/Query-timezone

Answer 2

you cannot get timezone, but you can get current time from client side.i.e. through javascript and than post back. On server side, you can convert that time to GMT/UTC. The UTC shows the TimeZone.