More than 40 years after the invention of the personal computer, it is astounding that we still need World Backup Day. This year’s event, which takes place on March 31st, the day before April Fool’s Day, ‘is a day for people to learn about the increasing role of data in our lives and the importance of regular backups.’ Here’s the key takeaway: You need to regularly back up your data because the chances of losing some or all of that data are high, and getting higher.