Redmine

In lib/i18n.rb, format_date is not using User.current.time_zone like format_time does.

I suggest the following patch but it is not fully tested and is delivered AS IS.

    def format_date(date)
      return nil unless date
      time = date.to_time
      zone = User.current.time_zone
      local = zone ? time.in_time_zone(zone) : (time.utc? ? time.localtime : time)     
      Setting.date_format.blank? ? ::I18n.l(local.to_date) : local.to_date.strftime(Setting.date_format)
    end

See also my other patch for #5378

Are you talking about the zone settings in the redmine profil settings ?

Everywhere. Include: system timezone setting of our server, system timezone setting of all our desktops, and the timezone setting in redmine profile. They are all UTC+8.

However, if I (git) push a file from my desktop to our server, and check redmine's repository immediately, redmine says this file is modified 8 hours ago.