March 15 in the ancient Roman calendar; the day in 44 b.c. on which Julius Caesar was assassinated. if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}