Do you know that except the Women's day (March 8th) in Russia people also celebrate the Men's day on February 23rd? 
The official name of the holiday is Defender of the Fatherland Day. This holiday has a military history and was first celebrated around WWI. But nowadays it's mostly just a holiday of all men. On this day women give presents to their husbands, fathers, boyfriends, male colleagues. They know very well that their women's holiday is coming very soon, and the quality of the gifts they will get on that day very much depends on what kind of gift they give to their men on February 23rd.

Here are some important phrases related to the holiday:
День защитника отечества - Defender of the Fatherland Day
С Днём защитника отечества - Happy Defender of the Fatherland Day!
Поздравляю с 23 (двадцать третьим) февраля! - Congratulations with February 23rd!

Do you have a similar holiday in your country?