Happy Mother's Day to all of you with children! Mother's Day was established as a holiday in the United States by President Woodrow Wilson in 1914. Mother's Day is the busiest restaurant day of the year in the US. It is also the biggest holiday for long-distance phone calls. And, of course, sales for greeting cards, flowers, and even candy, are high on Mother's Day. For info on Mother's Day around the globe, you can click here.