Day after day, Kevin Knight scans news and commentary pages looking for items that will interest Catholics and others who visit his New Advent website.

With its plain white background, stark graphics and columns of headlines, the site looks something like the powerful, secular Drudge Report. But New Advent focuses on church life and doctrine, not celebrity scandals and political horse races.

Knight does appreciate the occasional zinger. Still, he has learned to be extra careful when April 1 approaches. After all, the Chair of St. Peter is occupied by a pope whose off-the-cuff remarks often puzzle the faithful. Oh, and Donald Trump is president of the United States.

"Yes, it has gotten harder to tell satire and hoaxes from the real thing," noted Knight. "It's getting more necessary to be explicit when linking to some stories -- especially when they deal with Pope Francis. … In the past two years, I've deliberately avoided linking to April Fools' stories for this very reason."

All savvy news consumers need to do to see what Knight is taking about is open an online search program and enter various religious terms and then the phrase "not the Onion," referring to The Onion, a secular satire site.

Take this headline, for example: "Muslim Schoolgirl Sent Home Because Her Skirt Was Too Long." That story is real.

Or how about this? "Pope Francis to make Martin Luther a Saint on October 31." That jest ran on April 1 on the "Liturgy: Service and Gratitude" site.

Consider this headline: "Jesuits to Admit Women to the Society."