GLPI server time zone shows in Setup > Authentication instead of Setup > General about glpi HOT 4 CLOSED

I don't understand this issue or maybe it's a misunderstanding of what is defined, where and "what for" (and maybe a label thing)

The timezone (or offset by default) defined in Setup > General > Default values corresponds to the time zone applied by default for all users unless you ovewrite it at user-level.
This configuration handles the timezone function (Europe/Lisbon for example).

In authentication, the offset (and not timezone compliant) corresponds to an offset applied in the use case of ldap sync . It's the time_offset value stored in glpi_config table and it seems to be a legacy thing. This is not used anywhere else.

There is no place in GLPI where you declare your server-side configurated timezones / offsets (OS, mysql/mariadb and php levels) as they can use a specific value or the OS one.
As for version 10.x and 11.x, all points in time (datetime) are still stored as TIMESTAMP (so relative to UTC with a range from 1970 to 2038).

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I'm sorry, but there is no "server timezone" in my Setup > General > Default Values panel. I'm currently using version 10.0.14. That may explain my confusion, I now understand the auth offset is a different parameter.

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The problem is myself and my misspell : it's not a server timezone, just a display "timezone" in personnalisation. This is the one i'm talking about in the first paragraph.
Corrected.

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Those are indeed two distinct settings. The one in auth file is specific to authentication and is present in very old GLPI versions.

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