If you change the time zone setting, current crawl duration is incorrect

If you install search server, then change the time or time zone on that server and run Ektron CMS400.NET on a remote server, the Crawl Duration field is incorrect.

The Crawl Duration field on the SharePoint 2010 Central Administration Search Service Application: Manage Content Sources screen has an incorrect value.After installing search server, you changed the time or time zone on that server.Don't change the time or time zone on the Search Server.