which day is celebrated as 16th feb

1. National Almond Day: This day celebrates the almond nut, which is a popular snack food and ingredient in many recipes.

1. National Do a Grouch a Favor Day: This is a day to perform a kind gesture for someone who is feeling grumpy or grouchy, in the hopes of cheering them up.

1. Mardi Gras Day (in some years): Mardi Gras, also known as Fat Tuesday, is a holiday that is celebrated in many parts of the world, particularly in areas with large Catholic populations. It marks the last day before the start of the Christian season of Lent, which begins on Ash Wednesday.

It's worth noting that some of these observances are more widely recognized and celebrated than others, and that their level of significance may vary depending on cultural and personal contexts.