TechGuess How You Know It's Yom Kippur On The Internet?Just Google "sundown time."By by Sapna MaheshwariBuzzFeed News Reporter and by Dan OshinskyBuzzFeed StaffPosted on September 12, 2013, 4:31 pmTwitterFacebookLink On Yom Kippur, Jews fast from sundown to sundown. And according to Google Trends, Jews tend to use Google to figure out when sundown actually happens. Guess the mishpucha must be ready to break the fast.