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 specific instance is mentioned by Peter?
16. How did Christ reprove those who, though familiar with the letter of the Scriptures, failed to understand them?
What is said of the strength and wisdom of God?
On what basis is there no possibility of justification for the sinner?
What does this angel say?
What were to be the signs on earth of Christ's coming?
What is said of the strength and character of the angels?

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