May 10 is observed in Azerbaijan as the birthday of Heydar Aliyev (1923–2003), the former president and national leader who played a major role in shaping the modern Azerbaijani state.
- Heydar – Of Arabic origin, meaning lion. It is a name symbolizing strength, bravery, and leadership. In Azerbaijan, it is especially associated with Heydar Aliyev, whose legacy is honored nationwide on this date.
