Context : SilkAir Flight 185 was a scheduled SilkAir passenger flight from Jakarta, Indonesia, to Singapore, which crashed into the Musi River near Palembang in southern Sumatra, on 19 December 1997, killing all 97 passengers and seven crew on board. 
Subject : SilkAir Flight 185 
Relation : point in time
The date of SilkAir Flight 185?