According to the search results, there are different websites that list national days, and the results vary depending on the website. Here are some of the national days listed for today:

• National Custodial Workers Recognition Day
• National Name Your Car Day
• National Fried Scallops Day
• National Consignment Day
• National Produce Misting Day
• National Smarties Day
• STEM/STEAM Day
• National Cappuccino Day
• Abet and Aid Punsters Day
• National Dunce Day
• National Harvey Wallbanger Day
• National Fried Chicken Sandwich Day
• Chaos Never Dies Day
• National Scrapple Day
• World Quality Day

Its important to note that the national days listed may vary depending on the source, and some of them may not be widely recognized or celebrated.