An important day is held on the 14th of march at 1:59 am somewhere in America. can you guess what this day is called?

**Hint** - Look at the figures closely!

The 14th of march is denoted by 3/14. The time 1:59 written without the colon is 159.

Writing 3/14 as 3.14 and appending the string '159' after 14, we obtain 3.14159, which is the approximation of "pi" correct to 5 places of decimals.

Consequently, this day is called Pi day.