Fun Fact: In old Slavic tradition (the younger generations don't really continue this tradition), when people say their age, they say the age they will be turning in the current year.
For example: If somebody turns 60 in September 2015, he will already say he is 60 in March 2015.
So, if someone was born on 31 December 1929 and dies on 1 January 2010, people will say he was 81 at the time of his death, even though he just celebrated his 80th birthday!