You either love ‘em or you hate ‘em. But you can’t deny their popularity. Fig Newtons have remained a much-loved pastry for over a century, so no wonder they get their own day. January 16 is National Fig Newton Day and we know you can’t wait to enjoy a few in celebration. Fig Newtons came into existence when, in the 19th century, physicians began to promote an increase in biscuits and fruit in one’s diet as a remedy for digestive problems.