Does not respect 12/24-hour setting when not logged in

[forteller]

I installed English language Ubuntu, but otherwise with localization settings for Norway. That set the clock to a 24-hour setting (as it should). And this works great, when I'm logged in the clock shows me the time as being 21:30 right now. But after turning on the computer, and before logging in (that is, in the Unity Greeter), the setting is not respected and the clock says 9:30 PM.

Expected:
The clock should have the same setting in Unity Greater as after logged in

What happens:
I have 12-hour setting in Unity Greeter, and 24h when logged in. The last one is correct.

[Charles Kerr (charlesk)]

Indicator-datetime uses per-user settings stored in dconf files in ~/.config/dconf/ ... in order to support this, we'd need a way for the greeter to set this configuration, and for unity-greeter to feed this configure info to the indicators.

It's not clear to me that this is desirable.

Adding also-affects for unity-greeter and to Ayatana for a Design opinion.

[forteller (forteller)]

But it has to show either 12 or 24 hour, why is the default 12 hour? From Wikipedia article on the 24 hour clock: "This system is the most commonly used time notation in the world today,[1] and is the international standard (ISO 8601) notation for time of day" https://en.wikipedia.org/wiki/24-hour_clock