Todd Strandberg is executive director of RaptureReady.com, which publishes the Rapture Index.

David Reagan is founder and director of Lamb & Lion Ministries, a Christian organization that proclaims the imminent return of Jesus. It is based in McKinney, Texas.

Wilfred Hahn is founder of Mulberry Press, publishers of the Eternal Value Review. Part of the company’s mission statement is to proclaim the imminent return of Jesus, which it does by keeping watch on world economic developments.

Harold Camping is president of Family Radio and its attendant ministries. He predicted the Second Coming of Jesus on May 21, 2011, followed by the end of the world on Oct. 21, 2011. Camping previously predicted the end of the world in 1994. He lives in Alameda, Calif.

Irvin Baxter is founder and president of Endtime Ministries, a Christian non-profit organization located in Plano, Tex.

Pietro Arnese is editor of the website Apocalypse Soon. He lives in Italy.

The website RaptureReady.com offers a Rapture Index that measures physical signs and events that indicate the Rapture may be near.

Prophecy News Watch compiles news its editors feel is relevant to the Christian apocalypse.

Midnight Call is an online magazine of Christian prophecy that watches world events with an eye toward the Second Coming of Jesus. Email through the website.