The United States is home to a number of national days – and it can be hard to keep track of them all. That’s why National Day Directory was created. It acts as a comprehensive directory that includes information about more than 1,500 different U.S., Canadian, and International holidays – including their dates, what they represent, and how you can get involved in celebrating them! As part of our Gmail integration feature, registered users are able to use any supported “National Day” as an outgoing greeting in emails they send through Gmail. This way you never have to worry again about forgetting to celebrate another National Day!