When running eHour standalone: To locate the eHour home directory is the folder named home, inside the folder on your filesystem:
eHour standalone: In the folder / directory where eHour is installed . In case it was moved you can find is a directory named home. This is the eHour Home directory. Is it not there? Find the exact location in the ehour.vmoptions file, found in the root of the installation folder.
When running eHour WAR: the eHour home directory is named in Tomcat's conf/Catalina/localhost/ehour.xml filewhere you unpacked the downloaded WAR distribution, for example /opt/ehour/ehour-1.4.3/