Those who are familiar with Saturday evening Worship services know that these services are generally more laid back than Sunday services. People usually do not come in their Sunday best, but come wearing whatever they have on. Some may come wearing bib-overalls if they have been working in their yards all day, or wear team colors if going to a sporting event. Additionally, these services are usually short – about thirty minutes – to accommodate busy Saturday schedules.
Source : http://www.newsbug.info/hoopeston_chronicle/first-christian-church-plans-saturday-evening-worship-services/article_b47bd3de-2890-5a7b-b280-950649f5c7bf.html