A day's stories

International Day of Mathematics

Explore the observance’s date, meaning and origins.

International observance

International Day of Mathematics

Every year on March 14 ↗

Discover the joy and uses of mathematics in everyday life and science.

#Science #Education #Culture #Observances

Loading favorites.

How did it begin?

UNESCO proclaimed this day in 2019 to raise awareness of mathematics and mathematics education. Every March 14, it celebrates mathematics’ role in understanding science, technology and life.

Source · UNESCO — International Day of Mathematics 2026 ↗ (new window)

Suggest a correction

More observances to explore

Dates specified for each year

Last Day of the Lunar Month

The last day of each month in the Korean lunar calendar.

#Language

Unofficial observance

Every lunar month: days 15 (including leap months)

Fifteenth Day of the Lunar Month

The fifteenth day of each month in the Korean lunar calendar.

#Language

Unofficial observance

Every lunar month: days 9·10·19·20·29·30 (including leap months)

Son-eomneun Day

A Korean folk custom used when choosing dates for moving or major events.

#Home

Unofficial observance

Dates specified for each year

Singugan in Jeju

A traditional Jeju period for moving and repairing homes.

#Home

Unofficial observance

Every lunar month: days 1 (including leap months)

First Day of the Lunar Month

The first day of each month in the Korean lunar calendar.

#Language

Unofficial observance

Dates specified for each year

Hansik (Cold Food Festival)

A traditional spring festival for honoring ancestors and tending graves.

#Tradition

Unofficial observance