Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is celebrated on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant digits of π.
World Kidney Day is celebrated globally on the second Thursday of March every year. This year World Kidney Day is celebrated on 12th March 2020. The theme of the 2020 World Kidney day is “Kidney Health for Everyone Everywhere–from Prevention to Detection and Equitable Access to Care.”