User Profile Time zones Etc/GMT+- not working as expectedIssue When setting a user's profile timezone to Etc/GMT+(1 to 14) or Etc/GMT-(1 to 12), date conversion from GMT is the opposite of what is expected. For example, a user who sets their timezone to Etc/GMT-5 expecting to see US-ET time will instead see Maldives time.CauseEtc/GMT+- time zones are POSIX format instead of ISO 8601 format, meaning the symbol is the opposite of the value. This is not determined by ServiceNow. Some examples of this can be found in documentation for third party products like IBM and PHP.https://www.ibm.com/docs/en/cloudpakw3700/2.3.0.0?topic=SS6PD2_2.3.0/doc/psapsys_restapi/time_zone_list.htm https://www.php.net/manual/en/timezones.others.phpResolutionPlease avoid using Etc/GMT+- time zones and user actual named time zones instead. New installations of newer versions of ServiceNow do not include Etc/GMT+- time zones for this reason.