On what day does John say he was in the Spirit?

Answer

"I was in the Spirit on the Lord's day." Rev. 1: 10.

What treasures are hid in Christ?
Where was Christ to be born?
Why should wives he in subjection to their husbands?
Why did God destroy the antediluvian world?
After the law had been proclaimed from Sinai, what did the people again say?
20. When and by what church council was the observance of the seventh day forbidden, and Sunday observance enjoined ?
What classes are we especially enjoined to help?

Questions & Answers are from the book Bible Readings for the Home Circle