No timezone detected on Ubuntu Linux

[falko]

When I go to http://momentjs.com/timezone/ no timezone is displayed. I'm running Ubuntu 16.04.2 LTS and tried Firefox 53.0.3 (64-bits), Chromium 58.0.3029.110 and Opera 45.0. If I do the same in a Windows VM, it properly displays 'Europe/Berlin 08:57 am CEST'

$ date
Di 13. Jun 08:34:53 CEST 2017

If I try the following JavaScript code it detects the offset correctly:
https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_gettimezoneoffset

[falko]

$ more /etc/timezone
Europe/Berlin

[mattjohnsonpint]

What precisely do you mean by "no timezone is displayed"? The moment-timezone website give a map of the time zones of the world. What you get back is related to where you place your mouse, not what is on your machine.

We have a function moment.tz.guess() that you could call for that, but is that what you're doing?

The map does default to the active guess, but if you mouse-over, you'll get something else.

[falko]

The page http://momentjs.com/timezone/ displays a timezone even without placing the mouse on the map. My understanding is, that this is the time zone detected from my browser. However, on my Linux system, the detection doesn't seem to work.

[gilmoreorless]

Time zone guessing issues like this often come down to the underlying data in the browser, which changes over time. I'm closing this off for now, but if the problem is still happening, feel free to re-open the issue.