Timezone incorrect (on alpine linux running on a Kindle)

[jimmyff]

For some reason the timezone is coming through as GMT-0100 to javascript apps. I created this test page to see what was going on: https://jimmyff.github.io/timezone-test-web/

On Alpine Linux I have my timezone set to Europe/London, the clock in the app bar shows the correct date & time as does running the date command in a terminal.

In Midori browser when i go to the settings -> 'Show clock in toolbar' it displays the correct time which is not the time the Javascript apps are showing?

Where is Midori browser getting its timezone/time from?

Thanks