March 14th is White Day. This is a day when men give presents to women.

In Japan, White Day is celebrated on March 14th, exactly one month after St. Valentine’s Day.

White Day is a Japanese-born tradition

White Day is a day on which men give presents back to the women who gave them chocolates on St. Valentine’s Day.
This is a custom that was created in Japan.

Candy and marshmallows are White Day staples

In the same way in which chocolate is the staple of St. Valentine’s Day, candy and marshmallows were the staples of White Day.
However, the variations for White Day presents have increased and are gradually becoming more and more diverse, with people choosing to give wine or champagne, sweets, and other things.

Also, just like for St. Valentine’s Day, department stores set up special corners dedicated to White Day presents in their areas selling sweets and other merchandise for women.

On Wikipedia, it says that this custom that started in Japan has spread to part of Taiwan, Korean, and China, but I do not know if this is true.
Do you celebrate White Day in your country?