I have clients who want to provide some information to browsers no more than once a day. Of course, day&#039s begin and end for browsers at different times (relative to the time zone of the server). How can I achieve this. Is there a way to get the current time zone (or GMT offset) from the client? Can you set a cookie&#039s expiration with a specific time zone so that the browser knows when to expire? A hidden form field who&#039s value is set with javascript (yuck!)?