Timezone woes - always defaults to America/Denver

Continuing the discussion from Insert Date Timezone is always UTC ; my Timezone is ignored:

All the calendar/default discourse stuff demands a real timezones
I try to set Time in Canada - Wikipedia (“America/Edmonton”)
it always reverts back to “America/Denver” when being rendered, which is confusing to some who don’t know Denver is in MST GMT+7.

Site server is running in GMT, locale is “America/Edmonton”, Local computer is in MST/+7

Is this a chrome problem or discourse problem? Is it possible to display the timezone as GMT+x so it’s location name agnostic?

results in