Firstly, please accept my condolences on the passing of your relative. May God console you and the whole family among the mourners of Zion and Jerusalem.
There are normally three services that are prayed each day in a Shivah House. The Morning Service is usually arranged for a time that is convenient for those who have to get off to work afterward. That could range from 7:00 am to 8:30 am depending on the people and the day (Sundays are often later). The Afternoon and the Evening Services are often combined so that people can come once in the late afternoon (while there is still daylight outside) and then stay until after the Evening Service.