On my Yahoo Mail, it shows the "Standard" time zone on the emails, for example it has the EST (Eastern Standard Time) time on the emails, while we're on EDT (Eastern Daylight Time) time right now -- so the times are an hour off. This is with Pale Moon Portable, and no addons or extensions... It does work correctly on Firefox ESR...
I also notice this on the CBC.CA/LISTEN website, if I look at the "Schedule and Playlogs". On Pale Moon it is an hour off and shows the time zone as "GMT-5", whereas Firefox ESR and Waterfox have the correct time and the correct "EDT" time zone. I posted about this a while ago, and since it's a minor problem (more of an inconvenience) it's a low priority issue.
I also notice this on the CBC.CA/LISTEN website, if I look at the "Schedule and Playlogs". On Pale Moon it is an hour off and shows the time zone as "GMT-5", whereas Firefox ESR and Waterfox have the correct time and the correct "EDT" time zone. I posted about this a while ago, and since it's a minor problem (more of an inconvenience) it's a low priority issue.