Baku, January 20, AZERTAC A state-wide moment of silence was observed for the 20 January martyrs today at 12:00 (local time) across Azerbaijan.Ships, cars and trains sounded sirens throughout the country to remember victims of the 20 January tragedy.On the occasion of the 33rd anniversary of Bloody January tragedy, commemorative events have been arranged in all cities and districts of the country, with the national flag lowered on all buildings.Baku residents have been visiting the Alley of Martyrs since early hours of Friday to pay tribute to Azerbaijan`s valiant sons and daughters.