Birthdays are important occasions in Russia and are celebrated от всей души (wholeheartedly). The traditional greeting is С днём рождения! (Happy Birthday) although the и sound is rarely annunciated.  So it sounds more like С днём рожденья or, for particularly fast-talking Russians, even с днём рожденя. Sometimes you might also hear с днём варенья (literally: happy jam day), which is used mostly to congratulate children or really good friends. With…