How to get the user timezone via jsTimezoneDetect and pass it to Coldfusion in onRequestStart.cfm?

[Thorsten Eilers]

Good evening,
I would like to detect the user timezone via jsTimezoneDetect and pass it to Coldfusion in events/onRequestStart.cfm to a cf variable.
How do I do this? Do I need some AJAX for this?
https://bitbucket.org/pellepim/jstimezonedetect/

I am thankful for any hint/help.
Regards
Thorsten

[Tom King]

I fear onRequestStart will do exactly that. Trigger as the requests starts 'on the server', i.e before it even reaches the user.

Now, you *could* use JS to set a session var or something once the page has loaded...

[Thorsten Eilers]

The problem is I would like to show the guest users dates corresponding to their timezone.
So CF has to know the users timezone before processing the page.
What does others do in this case?
Have a welcome screen to get the timezone and have it stored as session var for following requests?
I would prefer not to have a welcome screen, and instead having the timezone data on the first request.

[Andy Bellenie]

I prefer to store all dates as UTC then use JS to format their display. That doesn't require storing the timezone.

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