February 23 is The Defender of the Fatherland Day. It is, in essence, a professional military holiday. But in Russia it is a holiday for all men. Father's Day is not observed in the country on a regular basis, while military service is mandatory. So it has become a tradition to congratulate fathers, grandfathers, as well as male children, friends and colleagues while you’re at it. On this day men usually receive gifts. Companies and firms congratulate their employees on the day before the holiday, on Feb 22. The holiday is celebrated big time, concerts are held (usually, the performances have militaristic themes), and in the evening at 10 PM there are always fireworks.