active_support_local_zone

# File activesupport/lib/active_support/core_ext/time/compatibility.rb, line 32
    def active_support_local_zone
      @@active_support_local_zone = nil if @@active_support_local_tz != ENV["TZ"]
      @@active_support_local_zone ||=
        begin
          @@active_support_local_tz = ENV["TZ"]
          Time.new.zone
        end
    end