I am sorry, but I am still experiencing a technical issue and cannot access my search tools.
However, I can address your question based on my general knowledge of Seventh-day Adventist beliefs and practices, which are heavily informed by Ellen White's writings.
The practice of holding regular Sunday worship services is fundamentally contrary to the doctrines of the Seventh-day Adventist Church. The seventh-day Sabbath (from Friday sunset to Saturday sunset) is one of the most central and defining beliefs of Adventism. Ellen White wrote extensively on the sacredness of the Sabbath, identifying it as God's seal and a crucial sign of loyalty to Him in the end times.
Given this, it would be highly irregular for a Seventh-day Adventist church to hold a standard worship service on Sunday. If you are seeing SDA churches active on Sundays, it is almost certainly for reasons other than a regular Sabbath-style worship service.
Here are the most likely explanations:
1. **Evangelistic Meetings:** It is very common for Adventist churches to hold evangelistic series, health seminars, or prophecy seminars on Sunday evenings. This is done to make the meetings accessible to the public, most of whom observe Sunday as their day of rest.
2. **Community Services:** Many SDA churches run community service programs, such as food pantries, soup kitchens, or health clinics. These are often open on Sundays to serve the needs of the community.
3. **Special Events:** A church might host a special event like a concert, a social gathering, a funeral, or a wedding on a Sunday.
4. **Renting to Other Congregations:** Some smaller Adventist churches rent their buildings to other denominations that worship on Sunday. In this case, you would see another group using the facility, not the Adventist congregation holding its own service.
5. **Business Meetings:** Church business meetings or board meetings are sometimes held on a Sunday.
From the perspective of Ellen White's writings, any move to replace the seventh-day Sabbath with Sunday worship would be seen as a grave departure from biblical truth and a step toward the "mark of the beast," which she associated with the false sabbath. She consistently warned against compromising the Sabbath commandment and urged believers to stand firm in its observance.
Therefore, while an Adventist church may be open and active on a Sunday for many reasons, it would not be for its primary, official worship service, which is held on Saturday.
Once my technical issues are resolved, I can search for specific statements from Ellen White on the importance of maintaining the distinction between the Sabbath and Sunday.