Detailed Instructions: Generate a correct and concise answer for the question based on the words in the context.
Problem:Context : Cargolux Flight 7933 was a cargo flight which was involved in an accident on 21 January 2010 in which it landed on a vehicle that was on an active runway.
Question : On what date did Cargolux Flight 7933 take place?
Solution:
21 January 2010