This was one of my favorite traditions to observe while living in Moscow. I'm not a huge fan of "блины" (Russian pancakes, more like crêpes though in my opinion) but they are definitely worth a try because they are so prevalent during this week. There are also other cool festivities around town. Not sure how they celebrate in other Russian cities but in Moscow it was a very interesting time.Greetings from Mr. McArov.
This particular holiday, for one, is non-existent in Russia. Instead, today is the last day of Maslenitsa, or Butter Week, which is an analog of western carnival as a celebration before the lent and which is famous for eating pancakes. Orthodox lent starts on a Monday instead of a Wednesday, and the last day of Maslenitsa (an analog of Mardi Gras, or Fat Tuesday) is called the Forgiveness Sunday. There is a great tradition to ask forgiveness of everybody one knows. Maslenitsa often comes later than carnival because Orthodox Easter is usually later than Catholic one: in 2013, Easter comes on March 31 according to the western Gregorian calendar and on May 5 according to the eastern Julian calendar.