zulip/templates/zerver/help/change-the-time-format.md

Change the time format

By default, messages in Zulip are displayed with a 12-hour time format (e.g. 3:00 PM, not 15:00).

Change the time format

{start_tabs}

{settings_tab|display-settings}

1. Under Time settings, click on 24-hour time.

{end_tabs}