Pregnancy Trivia is a collection of facts and information about casinos which you can share on twitter and facebook. Did you know that Tuesday is the most popular day for babies making their arrival in the world, with Saturday being the least busiest day of the week. This is more than likely because most doctors do not schedule c-sections for Saturdays? Did you know that about 3% of all pregnant women will give birth to twins. This rate is an increase of nearly 60% since the early 1980s. However, 17% of pregnant women over 45 will give birth to twins.