1. 1.17.x modules/system/system.module BACKDROP_USER_TIMEZONE_SELECT
  2. 1.15.x modules/system/system.module BACKDROP_USER_TIMEZONE_SELECT
  3. 1.16.x modules/system/system.module BACKDROP_USER_TIMEZONE_SELECT

New users will select their own timezone at registration.

File

modules/system/system.module, line 25
Configuration system that lets administrators modify the workings of the site.

Code

define('BACKDROP_USER_TIMEZONE_SELECT', 2)