When and why was the Sabbath moved from Saturday to Sunday?

Question: When and why was the Sabbath moved from Saturday to Sunday?

I have a friend, Seventh Day Adventist who said the the Catholic church moved the Sabbath and we had not right to do so.
Can you help me with this question.
Darryl :confused:

These links should be helpful in refuting Seventh-Day Adventists. CAF staff apologist Michelle Arnold grew up as an Adventist and has also written on the topic for Catholic Answers. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.
Recommended Reading:

[LIST]
*]Why do Catholics worship on Sunday?
*]Who started the Seventh-Day Adventists?
*]How do I talk with a Seventh-Day Adventist?
*]Can you recommend resources on Seventh-Day Adventism?
*]Seventh-Day Adventism
*]Sabbath or Sunday?
*]From Sabbath to Sunday by James P. Guzek
[/LIST]

DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.